Did you see my second reply when I checked the logs again a bit later?
The Raw Access server logs on Bluehost are 2 hours old so that’s why I didn’t see anything from Stripe right away, but when I went back a couple hours later I did see POST entries for my webhook tests. So I don’t think the server is blocking anything.
I checked the htaccess file and it consists only of this:
# Added by provider
Options +Indexes
(Not sure what that is but it doesn’t seem like anything that would be causing our issue here)