Unable to display realm

IOS users, before the 1.21.20 update, they were unable to play and enter the realm, and after the update, the realm did not appear. I tried reinstalling and restarting the phone, but it did not solve the problem. After the 1.21.21 update, the realm was displayed, but it was stuck at loading. I entered once on the morning of August 14, and the realm was no longer displayed.