Why i cant reinstall my apps?

[AC Question]

I cant update my instagram, so i uninstall, and when i try to reinstall, i cant. It says i need to sign in my google account and it requires authentication. But the thing is, i always signed in to my google account. I did sign out and sign in back, but it didnt work. Any idea?

 

[Golfdriver97]

Welcome to the forums. What device do you have? Have you tried rebooting the phone?