"connection failed" message but email working properly

I just started using eM client (7.0.26687.0). When I log in, it asks for the password, although it’s saved. It stays until I hit “Cancel”. Then I get the message “Connecting to [email address] failed”. Strangely, the email works normally after that. But I keep getting the error message with every received message.

Hello, can you please try removing and re-adding the affected account in Tools>Accounts?