Comment by Necrachilles#97945 worked for me, more or less, thank you. We were trying to play with a (seemingly corrupted) starter deck. Exported it, removed one empty line that was at the bottom of the deck, and added it as a new custom deck that actually allowed us to play me connect. In fact only my deck was corrupted, not my friend's.

still having this issue, it seems to be whoever submits there deck second gets the errors.

I had the same issue. “unable to submit deck”.
On Ipad vs ipad.
WORKAROUND: unfriend and refriend - now we can play again

Its December 7th and this is still a problem, not a single dev has responded to this either wtf

First match with friend worked but once we tried different decks this error occurred; reusing the same decks as the first match allowed us to play.

same issue here. We tried with my friend several starter deck. The same message error every time "unable to submit deck, try again later"

I have the same problem playing with different friends. It happens on Window 10/11 and on iPad too.

Running into the same issue with a friend. He gets the “unable to submit deck” error when we try to start a friendly game. The error occurs with even the starter decks and regardless of match type. We’re both able to start games with random strangers, it’s only the friendly matches that are broken.

same issue here... and this post was made August 26, 2021 and still isent fixed....

Same issue, error -unable to submit deck. This comes up challenging through a friends invitation or with a direct challenge. The purpose of this game is playing with friends, if we can't play together I'm not buying virtual decks

I have the same issue, we are not sure if it's because my friend is using a MAC book and I have windows or what is the issue but I opened a new account and the issue persist using all basic decks that come with the game. The error is always unable to submit deck.

I just wanted to pop in here in case anyone stumbles across this in a search to fix this (I'm sure uncommon) error.

The fix (or the most likely fix) is simply to export your deck list, paste it in notepad (or anywhere you can see it) and then remove any 'ghost cards'. The appear as "[Card Name] x0", or you can create unique decks from scratch.

It seems to generally be an issue when you 'clone' one of the starter decks as they have the 'ghost' cards within their deck list as each is removed/upgraded while you're playing the challenges.

This problem plagued my dreams for a couple days but hopefully this helps those that find it :)

I have the same issue whenever I try to battle a friend it says network error unable to submit deck try again no matter what type of battle I am trying to play can someone pls help me

Same error, I can't play against my friend...

Bump, was trying to challenge a friend on ipad.
Got this network error.

Gave up on ipad and moved over to PC.

Installed arena.

5 gb download

Logged in.

Same error.

Days pass.

Same error.

Wheeeeeeeee

unable to play with a friend.
I always get an error, either the deck is not valid (even though it is) or the game options are not the same with my friend and I. when I then click "play" nothing happens; trying to leave the game doesn't actually work

1. Give us the steps to reproduce the bug
I get the error message "Network Error - unable to submit deck. Please try again later". This applies to any deck, any deck setting (historic, traditional, etc.) ONLY when I try to direct-match with friends. I am still able to match with randos.

2. Note which platform you’re using (PC, Mac, Android, or iOS)
Windows PC

3. Enter the actual results you’re experiencing
Not able to join a direct match with the above error being displayed.
Direct challenge --> select deck --> challenge --> error code

4. Enter the expected results of the feature
Um, no error code? I should be able to direct-challenge friends

5. Add any relevant screenshots/videos
Attached screenshot of error thrown.

6. If you found a workaround, please add workaround steps.
No workarounds found.

Bumping. Doesnt work for me for desktop or mobile. Wifi or mobile data

I have the same issue, I didnt get jumpstart but everything Ive earned before current standard rotation is now unplayable against friends, even though everyone Ive tried seems to be able to choose anything they want to play against me.
Im on Mac but have spoken to people with the same issue on PC and mobile

so we found a work and this is specifically challenging people on your friends list to historic brawl, the work around is to select direct challenge from the top righjt, and then in the drop down menu select historic brawl and select your deck you want to play with, then close out of that menu so that the historic brawl deck is selected, then open friends list and click direct challenge, select deck type friendly brawl and challenge. This process should be easier by just selecting the deck from the challenge menu from your friends list