I have been trying to install Aadhaarfacerd app frim play store bur unable to do so... its showing not compatible for your device... my phone's software is fully updated... please guid le if anybody have any idea thanku

I purchased new Samsung galaxyM31 mobile 3 days ago. Yesterday my mobile was showing system update requirements..so I updated the system and after updation the mobile asking for password whether I firmly remember I didn't put any password before upda...

After software updates my phone is aksing for password whether I never put password in my phone. I have only utilised finger print sensor for locking now what should I do to open my mobile it is locked now.please help me someone thanks