It looks like the hosting for your website was actually moved to another provider back around April 2022, so everything left on Sonic's side, aside from the Domain (Name) Registration will not have any effect on the live website. Since the website is now on servers outside of Sonic, I can only give some basic pointers based on what I see when visiting the Login page.
What's likely causing problems is your 2-factor authentication plugin -- I think it's called 'Authy for WP'. It looks like the official Wordpress plugin for Authy was discontinued  in 2018, so that may be related to why it is not working. I recommend seeing if your current hosting provider can help you disable that plugin so you can login with just your username and password into the wp-admin page and see if there are any indications there of what to do.
-- Joe M