I think your default WordPress is not compatible with many WordPress Plugin. This is why I was facing the problem. Like “Woo commerce” plugin is conflict your WordPress. It shows All ok when I logged into the WordPress with Admin ID. But whenever I sign out or Browse from another browser/incognito window, Every time I face the the problem. My website not shows ok. It looks like HTML version. I have attached a screenshot of this problem here.

But this problem is almost solved. I have downloaded the WordPress CMS from their official website and manually installed it. Now Everything working properly. You can take a look and compare it with attach image, how it was when I was using 20i’s default WordPress.

https://www.bestvally .com/

Lastly I suggestion will fix your Default WordPress as soon as possible. I Hope next time when I install your default WordPress this problem will be solved.