Problems After website and email migration

I just did a website and email migration to a new hosting company server. I have domain email and on 1 computer everything works fine with sending and receiving on my 2 email accounts, but on my main email computer 1 account can receive but the other one doesn’t send or receive.

I have the exact settings for both email accounts on both computers. I realize sometimes things can be quirky for a little while when doing a migration, so I’m wondering if there’s a way to clear out the cache on EM CLient or if I need to reinstall it. If I reinstall I definitely don’t to lose my settings and of course my emails. Any suggestions?