I have been using eM Client for years with this same account. This morning I am getting a popup asking me for my credentials. I am adding the correct information, yet it is failing. I am using google with a personal domain (which shouldn’t matter).
The last email I received through eM Client was last night.
I have restarted the application, and there is no change.
Also…not using a VPN or 3rd party Virus application (except Windows Security)
Popup Below: