Ok to make things clear:
- did you both reinstall google apps through the updater app? this is a necessary step after an update (if you want to use google apps & services) - deleting and re-addin google account is not enough.
- is your wifi symbol grey or blue when connected to the internet? If it’s grey and you can access the play store download any app and sync should work again. If it doesn’t work continue here.
- If you can’t reinstall google apps continue here.
If none of this helps post back here.