Mail preferences not Working on macOS Mojave ver 10.14.6
Can't select Mail preferences, only brings up signature page with no options to select.
I have tried restarting and holding shift key while opening Mail - no change
I have tried safe mode - no change
I have tried opening another account - I could open Mail preferences there, but still not intros account. hence I believe it must be a setting in this account.
How do I access settings etc if can't open Mail preferences?
MacBook Pro 15", macOS 10.14