A friend of mine still have the same problem (I don't know if today's fix was about this problem or not) from wednesday 25th (after the update).
Rebooting, multibooting or uninstalling/reinstalling the game have done nothing.
He/we tried on PC and Android. He's stuck on initial scene loading, or just after connexion to server.
Definitely account related IMHO.

Kenshin#90309 seems to have identified the source.

We'd be glad if you manage to find a way to fix it :)
Best of luck.

PS : my (non english-speaking) friend's account is Hantred#18276

On pc, with two different account:

The first account has normal first scene. (see player1.log)
Log with second account and i have black screen with sound.(see player2.log)

changing the time zone to UTC work but it is a poor workaround.
Please fix it.

Found the issue in the log, when the timezone is not UTC. That's definitely related to the QuestBar initialization:
[809] ArgumentOutOfRangeException: The UTC time represented when the offset is applied must be between year 0 and 10,000.
Parameter name: offset
System.DateTimeOffset.ValidateDate (System.DateTime dateTime, System.TimeSpan offset) (at <4756199cf52a4f14b33cdcc5659f782e>:0)
System.DateTimeOffset..ctor (System.DateTime dateTime) (at <4756199cf52a4f14b33cdcc5659f782e>:0)
System.DateTimeOffset.op_Implicit (System.DateTime dateTime) (at <4756199cf52a4f14b33cdcc5659f782e>:0)
ContentControllerObjectives.ShowQuestBar (System.Collections.Generic.List`1[T] quests, System.Collections.Generic.List`1[T] questRewards, RewardDisplayData dailyReward, RewardDisplayData weeklyReward, System.Int32 dailyWins, System.Int32 curDailyGoal, System.Int32 weeklyWins, System.Int32 curWeeklyGoal, System.Boolean doUpdateBarAnimation, System.Int32 numWinsInMatch, System.Boolean dailyWeeklyWinsEnabled, System.Action RefreshQuestDataAndRebuildDisplay) (at <66eaeaba2d254f59889aff6f9de686d2>:0)
HomePageContentController.ShowQuestBar (System.Collections.Generic.List`1[T] quests, System.Boolean isReturningFromGame) (at <66eaeaba2d254f59889aff6f9de686d2>:0)
HomePageContentController.OnFinishOpen () (at <66eaeaba2d254f59889aff6f9de686d2>:0)
NavContentController.FinishOpen () (at <66eaeaba2d254f59889aff6f9de686d2>:0)
SceneLoader+<Coroutine_EnterScreen>d__71.MoveNext () (at <66eaeaba2d254f59889aff6f9de686d2>:0)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <4a24a4d00a4a4c199fb9b7176a22a2d7>:0)

I have the issue and I did not complete the 2 colors quest before the update.
Like others have already stated, that seems to be the cause of the issue.
Please fix it.

Same problem in iPad Pro 2nd gen since wednesday 25th

I have the same problem. My workaround is to change the time to GMT/UTC. But now I have the error where the reset timer for the color deck challenge is permanently at zero. Is there a workaround for this?

Hello,

It sounds like you may need some more troubleshooting advice. Please review our Technical Troubleshooting articles for what advice we have available.

Thanks!

This is happening to me on iOS. When I change time zones to UTC the black screen goes away but the colour change free deck thing never refreshes, which is especially frustrating because I’ve just started playing the game. Not being able to unlock and try those free new decks really makes playing the game not worth it for me

Same problem on PC! :(

I'm still having this issue.. is there still no fix for this? :(

Same issue here on both iOS and PC.

A poster on reddit adviced me to set my PC time to UTC global. I am in UTC+2.

I sounds dumb (and I didn't believe it) but it worked for me.

lel

Same problem on PC here :/

I have the same problem on PC here. The game was running fine before the update.

Here are my logs, if it can help.

changing windows timezone to UTC fixed it. this is not an acceptable workaround though. same issue (black screen) on ipad. please fix asap..

Same here on PC, i've tried use other accounts on my PC and it works fine. I also tried to log with my first account (the one which is struggling with black screen) on different PCs but had same issue. I think that the problem is linked to my account.

Can confirm too, my account who was doing the 2 color deck quest have the issue and when changing time zone to workaround the issue the quest timer is stuck at 00:00:00.
When using a brand new account can play without any issue at all.

I confirm that I also have the issue, and I was in the middle of a 2 colors quest... Switching to UTC allows me to play, but the quest is completely stuck...

I created a new account this morning and I was able to load the game just fine without a black screen. Like other users have stated, the bug seems to be tied to new accounts where players haven't completed the dual colour deck quests before the update.

There you go Wizards, we have identified the bug for you. Instead of condescending posts from your staff, maybe fix it?

the same issue after last update. seems like it is a bug for players who have not get 2 colors quest before an update.