I have the same issue as in this topic
On the last week my site stopped working and shows this error : ERR_SSL_PROTOCOL_ERROR
http://patchbuilding.com/
I doublecheck all settings and all good, webflow says that domain is connected properly.
I sent support request 5 days ago but zero respond from webflow
Here is my site Read-Only: Webflow - Patch Building
@Oleg_Aksonov - Looks like you still have the issue.
Make sure you followed step 5 at → Manually connect a custom domain - Webflow University Documentation
hi, I did all according to instruction. (see attach)
unfortunately it doesn’t help, I did remove custom domain for a few times, but no changes.
Also I did try use custom domain without SSL and it works… but I need it with SSL.
And one more general feedback about webflow support. I have this problem for a 10 days or so… and only answers from support was in style: try to turn it off and the turn it on. speed of answers is also extremely hight, once per day 
and because of difference in time zone, I’m getting all this answers at night…
Did you add the TXT record?
