App won't start on iPhone since patch 21.0

I get the same issue

I am also running into this issue on my IPhone since installing the most recent update. I’ve tried reinstalling, restarting, and adjusting the regions but have not had any success.

Changing the region didnt work for me.

IPAD PRO 2nd gen
IPAD OS 15.3 (version)

while in the loading screen I get the following code HS:NT304:303:0
Please help.

Update, I reinstalled game and now it works.

After months now it is still an issue and changing regions does nothing now.
When is this going to get a fix?!