New update chaos

Hello all. So yesterday my PC updated Thunderbird and when the new version was opened it's basically blank with nothing displayed. There are two panes. The left pane has the word Folders in the left corner and 3 dots in the right corner. The right hand (larger) pane is completely blank. I have the "get messages" and "write" buttons above and the File, edit, view, etc options across the top and that's it. No inbox, no sent items, outbox, nothing. I can write an email and it still remembers my contacts. It'll download emails but doesn't display them because of course my inbox won't display. I'm using Thunderbird for business and really need to get it working. Any help would be appreciated. I've checked every menu and option there is but can not make anything display.

Thank you!