Thunderbird-Hilfeforum

I upgraded my Mac to the Sonoma operating system. Since doing so, Thunderbird won't open. Or actually, it pretends to open (the icon bounces up and down for a bit, then stops), but nothing works. The icon indicates it's open, but I can't access anything. If I right-click on it, and select "force quit" it looks like it's closed, but nothing else changes. I deleted my app, downloaded the latest version of Thunderbird, and it does the same thing. I read some things about the app storing documents separate from the app itself, but I couldn't find them on my computer. I have a lot of old emails that I need, as well as all my email addresses. So I have a few questions; does Thunderbird run on Sonoma (I saw a discussion board say something about Mac not supporting "legacy mail apps")? If so, how do I get it to work? If not, is there a way to retrieve my old emails or email addresses? Is running Thunderbird through a browser possible, and would that allow me to access my old documents?