Why am I unable to play King games after it transferred to my Galaxy Ultra s21

I know @JCSnoopy and I'm sorry I can't give you better solutions.

And yes, you can retrieve your levels by yourself if you use a King account (email+password) to save your progress.

(If you don't have an account to save your progress then I'd suggest to try to create an account on the old device where you can still see your progress. If your old device and app have internet connection, your progress will be saved on King servers and be accessible from any game app and device afterwards)

Once you're able to install Soda app on your device, hopefully, and use your credentials to log in to your King account, you'll be able to pick up your progress where you left off

Awesome news! Glad to to see you can play on your phone again!

Also thanks to soda mod @Yosca who helped with this too 🤗