Migadu is the best email hoster I know. I’ve been using them for all my emails during the last three years and never had an issue.
They allow catch-all recipients and forwarding, so your use-case should be possible.
I’ve recently read that Affinity programs now work through Bottles, though I haven’t yet tried it myself.
This site gives some reasons: https://manjarno.snorlax.sh/
As someone else already mentioned, using it with a trackpad (for example the Apple Magic Trackpad) is great.
Have you tried turning it off and on again?