I have both a Godaddy-parked domain name and a website built with Godaddy's Website Builder.
I have enabled forwarding for my domain to the website.
I have also "published" the website to that domain name in the Website Builder.
If I access the website via its native (Website Builder) url (<longname>.godaddysites.com), it renders nicely (responsive) on mobile browsers.
If I access it via the domain name (that is forwarded to that website), it doesn't render correctly (i.e. it shows the desktop version on the mobile browser).
Do I need to do something else?
Thanks for posting the question!
Could you please send me a private message with your domain name and your shopper ID? I haven't heard of anyone having these issues before and would love to dig in deeper.
I'm having this exact same problem from 2017, what is the URL/link where I can figure this out? Or please message me ?