Waiting for server on all of the last Color challenge

Hello, I have tried reinstalling, restarting, flushing DNS, rebooting router. I have also attempted this final Color challenge (where you face an opponent) on my Iphone.

However on both my PC (that originally had the problem) and Iphone, I find myself stuck on "Waiting for the Server".

I am wondering if there is something wrong with my account. Thank you!

Five color challenge - Green - final challenge - waiting for server bug on Android. This is the final challenge for me of the entire five color challenge. My final color is green and I'm on the final challenge where you fight another player. When you click play the waiting for server icon endlessly spins and never connects to a match. I am able to play other regular matches and connect in less than 30 seconds. The bug is unique to this challenge.

For me, I can do any color challenges except the final color challenges in any of the colors. I was trying to do the final White color challenge and got stuck on "Waiting For Server..." Have to close game everytime and open it.

It does this with any color challenge final match. Only on the final match with the robed adventurer icon. I can get into any of the other color. This only happened since the patch today, as I was able to do the final match fine in another color challenge yesterday.

same problem. i cannot continue with any part of the game because i cannot complete any of the color challenges.

I just started MTG Arena. It says it requires me to finish a color challenge to unlock PVP. I am on Challenge V of the Blue Challenge which is Blue vs ??? and when i click play it seems to be Waiting for the Server for what seems to be infinite for me. So far ive been waiting for an hour. A friend of mine who already played the game also tried to initiate the Challenge with the same result. I can't play with other players since i cant finish a Collor Challenge.

steps
1) Open MTGA. Update MTGA with 2021.5.0 game update
2) click on Color Challenge button
3) click on a Color (picked Blue)
4) click Play button. notice Stuck on "Waiting for Server" when starting a Color Challenge match. (see attached image Color Challenge Waiting for Server.png)

tried 5+ times and tried to wait for >2mins

tried the regular play queue instead and that is working.

Steps to Reproduce: While in a Color Challenge match, when I step away from my device by turning my screen off for about 30 seconds or longer, I'll turn my screen back on and the game would say "Waiting for the Server" followed by a Network Error saying, "There was a problem when communicating with the server". I would select "Ok", then "Waiting for the Server" will appear again taking me back to the Color Challenge screen. I would select "Play" again, then the "Waiting for the Server" will appear followed by the Network Error again. This process continues over and over again.

Platform: Android

Actual Results: Network Error (There was a problem when communicating with the server)

Expected Results: Reconnecting to the server after being kicked out during a match due to turning off/on the screen should allow users to play since the server had been reconnected.

Screenshots/Videos: Screenshots.

Workaround: Completely closing the application and opening it back up again.