See https://feedback.wizards.com/forums/918667-mtg-arena-bugs-product-suggestions/suggestions/48247409-waiting-for-server-in-the-store.

As a workaround, you can also uninstall + reinstall (presumably after every update).

At the end of a longer conversation with a Customer Service Representative, she wrote:
"If you do find a solution, please let us know so that we can update our Technical Support articles and agent training with that solution."

I referred to the workaround, which I posted in this thread down below, and I didn't even receive a "thank you". Needless to say, operations is of uttermost importance, but I do have the impression that certain departments are heavily understaffed.

Having said that, I can only suggest to try the proposed workaround.
If I'd have found an arm64 version of this library, I'd have attached it here, so that players with Apple silicon devices have a permanent fix and can enjoy native performance.

Same issue in oct 2024
Tried card and paypal but the in game browser is stuck
Logs show error parsing...
It's impossible to open a ticket
searching this issue show that it has been around for years for many users I guess wizard does not care about MTG Arena ans people are spending their money elsewhere

I experienced the same issue on my MacBook Pro with Apple silicon a few days before the DSK release.
Recently, I've just figured out a workaround and I'd like to share it here, because many Mac users are affected.

First of all, the problem should not occur if you're launching the game via the Epic Games Launcher.

If you launch MTGA.app directly from the Dock or by any other means, then you can do the following:
You can tell macOS to launch MTGA.app using Rosetta 2. This is a "compatibility layer", which enables a Mac with Apple silicon to use apps built for a Mac with an Intel processor.
One way to do this is described in the official Apple Support article: https://support.apple.com/en-us/102527
Follow the instructions under the section "Does your app need Rosetta?" and apply them to the /Users/Shared/Epic Games/MagicTheGathering/MTGA.app (instead of Safari, of course).

Alternatively, you can launch MTGA.app from the terminal by switching to x86_64 architecture first:
% arch -x86_64 open -a /Users/Shared/Epic\ Games/MagicTheGathering/MTGA.app

There are only three minor issues:
- Applications in x84_64 mode need more CPU. Then the Activity Monitor.app clearly shows higher CPU utilization (and the "Kind" column contains "Intel").
- When exiting the application, the error "MTGA quit unexpectedly." might occur. Nothing to worry about...
- And last but not least, personally, I feel bad for doing the job of the company, solving their problems and enabling players to spend their money on a product, where the support has room for improvement.

Having said that, I hope that some of the affected users stumble upon this info and consider it helpful.

Kind regards,
void

PS: For the interested reader, here are some technical details:
The main executable inside the app is built for both, arm64 (Apple silicon) and x86_64 (Intel, AMD). This can be checked in the terminal as follows:

% file /Users/Shared/Epic\ Games/MagicTheGathering/MTGA.app/Contents/MacOS/MTGA
/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/MacOS/MTGA: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit executable x86_64] [arm64:Mach-O 64-bit executable arm64]

Hence, a Mac with an Apple silicon will launch the arm64 version. Unfortunately, the library libZFProxyWeb.dylib, which is used for displaying a web browser window inside the game, was built only for x86_64.

% file /Users/Shared/Epic\ Games/MagicTheGathering/MTGA.app/Contents/PlugIns/libZFProxyWeb.dylib
/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/PlugIns/libZFProxyWeb.dylib: Mach-O 64-bit dynamically linked shared library x86_64

When initiating any monetary payment, the library cannot be loaded and the following error occurs and is logged to the Player.log:

Uploading Crash Report
DllNotFoundException: ZFBrowser failed to load /Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/Plugins/libZFProxyWeb.dylib: dlopen(/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/Plugins/libZFProxyWeb.dylib, 0x0001): tried: '/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/Plugins/libZFProxyWeb.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e' or 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/Plugins/libZFProxyWeb.dylib' (no such file), '/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/Plugins/libZFProxyWeb.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e' or 'arm64')), '/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/PlugIns/libZFProxyWeb.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e' or 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/PlugIns/libZFProxyWeb.dylib' (no such file), '/Users/Shared/Epic Games/MagicTheGathering/MTGA.app/Contents/PlugIns/libZFProxyWeb.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e' or 'arm64'))

By knowing that, it is pretty simple to bypass this obstacle. Once an application switches to x86_64 mode, then this application (and also all child processes) are executed as x86_64 binaries. Since all other libraries support both CPU architectures, the order process can be initiated properly.

I have the same issue on MacOS with an Intel MacBookPro

what the h&#$ is wrong with you wizards? We're only asking to be exploited! JFC

I tried contacting Customer Service about this issue, but couldn't get past the automated bot responses.

There's nothing about this in the Known Issues list (https://mtgarena-support.wizards.com/hc/en-us/articles/360000091646-Known-Issues-List), so I'm not holding out hope for a fix (especially given the huge volume of macOS-related issues that have also gone unacknowledged for the last year or two).

Since I've switched to Apple Silicon and to a newer OS a month or 2 ago, I've had the same Issue. Worked fine on Intel with the older OS

I am also blocked still, this is a bit ridiculous. I tried giving Arena as many permissions as possible in the Services settings, but still nno luck.

This is an old thread but it still does not work on my MAC so I am bumping.. Anyone with resolution to the store problem?

I tried multiple times to purchase the Modern Horizons 3 Tamiyo Play Bundle, but the screen gets stuck on the "Waiting for the Server..." message. The Xsolla purchase window never appears. I'm using an iMac 3.2 GHz 6-Core Intel Core i7 running Sonoma 14.5. Staying on the message for too long causes my computer fans to turn on.

Here is my screen with the same problem

I come back 4 moths later and there's still been no response LOL

My wallet is very happy that I've chosen to uninstall arena and play other things that don't cost $500/year to enjoy

it truly is bonkers to me that wizards would just shut down their entire revenue stream for mac users for months as per the other comment.

Bump, unable to open the payment window in the store, it just loads indefinitely on Mac. I can't spend any money until it's fixed, even if I want to!

Mac OS 11.5.1
MacBook Air (M1, 2020) 16GB

Same here. I'm not able to purchase gems (or anything else) from the store. It seems to be a Mac problem as I tried it from a different (Windows) device with the same account and worked well.

Device: Macbook pro, 13-inch, M1, 2020 16GB memory
OS: macOS Ventura 13.0.1

Bumping again because this issue has not been resolved. Loading the store ends up with the application just getting stuck in the loading state. It's incredible.

Bumping this because the event has expired and I never had a chance to play. I've spent multiple hundreds on MTGA and I expect higher investment in players from WOTC.