Hi Harry. I have already deleted and reinstalled the game and gone through the clearing cache for play store, play games app (where I view profile and achievements) and google play services, none of it worked.
I decided to reset my Galaxy tab s6 completely back to factory settings installed the game again but still wouldn’t log me into profile it just had the choose account box and still didn’t work.
I tried the game again and the hi there pop up for my profile popped up. It now seems to log me in to my profile but I don’t always get the ‘hi there’ profile notification as when I get this I will get an achievement pop up aswell in game although this has only Happened the once out of 5 achievements I have earned so far.
So at the moment it seems I’m getting achievements but not always the pop up, also when I look at profile it says sometimes 5/5 achievements unlocked instead of 5 out of the 94 available in game.
Sorry about long reply but trying to give as much info as possible so can be fixed as seems to definitely be a bug with the game, not having issues with other games popping achievements.
Thanks,please keep me informed of any progress the dev team makes on the issue