We have a static website that is being served from AWS s3 → example.com/blog.
We need to reverse proxy example.com to webflow website for which I am adding a subdomain to our webflow project i.e. proxy.example.com
This way I can reverse proxy example.com to proxy.example.com (WEBFLOW) and example.com/blog to S3.
The issue I am facing is that after adding my custom domain to Webflow and adding proper CName configurations I am still facing ERR_SSL_PROTOCOL_ERROR
My domain is - proxy.embassysocial.io
The propagation is successful as listed here -
But for some reason I am getting ERR_SSL_PROTOCOL_ERROR
After checking my HTTPs status I find this issue 
This is what I see after checking my HTTPs status, which is same as listed in this issue Getting ERR_SSL_PROTOCOL_ERROR on root domain
But I have not had any Lets Encrypt limit reached as mentioned in the above issue.
Any help will be deeply appreciated. We are on a time crunch for this launch.
Thankyou