V10 Spell Checker won't stop

I often send emails in French but most are in English. The spell checker tags every single French word as an error so I opened settings, spell checker, and turned off all spell checker options. I shut down eMClient, Shut down the Windows 11 computer. Restarted and the spell checker still comes up every time I send an email and tags every French word as an error. How do I turn off the spell checker if settings won’t do it? It would be useful IF it could check in either French or English or both at the same time - or at least remember when I click Ignore All for the next letter. Like for my name and website address, etc.

Was this ever answered or resolved as I can’t disable it - I just find it annoying to look at the popup box and then send.