Can't add existing Google acct to my tablet

[AC Question]

It says There was a problem communicating with Google servers. Try again later.

 

[B. Diddy]

Welcome to Android Central! Which tablet? Does this happen on any wi-fi network, or just your home network? Did it come with Google Play Store installed, or did you have to install it yourself? If the latter, then the tablet isn't certified for Google Play, and therefore you might have problems with other Google services.