Hi guys, I have been experiencing the same problem and was able to troubleshoot it myself and I think this would be really helpful for someone facing the same problem.
Problem: My website looks normal on PC but on mobile, it looks like the theme is not loading or something.
From this forum, I found out that the culprit was JetPack. So when I deactivated it, it solved my problem. But I still want to use JetPack for their stats. So I remembered that the night before, I was fiddling around in the Jetpack settings and was able to retrace back the option that I enabled that caused the problem.
Go to Jetpack Settings > Writing > Disable: Enable the Jetpack Mobile Theme
Hope this helps!
Helmi
