My wife's Gmail account stopped receiving email this morning, because its size was close to 16 GB. The account is synchronize with Outlook 2016 on her Windows 10 PC. So, I archived several GB of email, and Outlook now says that the email totals about 10 GB. Yet Gmail claim that she still has 15.5 GB of email, and she still cannot receive any new email. She does not use either Drive of Photos. Suggestions?