Can't switch to my old account in Diablo Immortal (Android)

Hello. I have an issue with Diablo Immortal.

I played the game about 2 years back, on my old phone. I stopped playing because my phone wasn’t powerful enough. Now I got new phone, downloaded the game and when I try to log into my old account, nothing happens. I get the Battle.net popup window, i write my login info, it takes me to another step where I can click on Switch Account and while the game is on, the sound stops for a second, the loading bar in the popup window loads but nothing happens.

When I close the game and click the Switch Account, it tries to start the game, but it’s like it doesn’t want to start at all, I get the black screen of starting the app and then it “crashes” back to Home screen.

I tried creating new account, but it gives me the same results.

Any possible solutions or info on how can I play my old character?

My current device is Xiaomi Redmi Note 13 Pro Plus