I can't receive the rewards from daily tasks or from the achievements. anyone knows how to fix it?

I can't receive it too. I thought it would be normal after the daily reset but no.

They already know about the issue and are working on a solution.
Calm down, have a snack, and wait for an update.

Arena also is not working. I hope the amateurs fix this too soon. But the ingame shop is working perfectly. You have to set priorities...