Site changed from https://www.domain.com to https://domain.com after WP upgrade

I use Bluehost too, but I don’t understand your problem. Do you just mean your site URL in simple scripts changed to having the period (.) on the end? If so, thats not really a problem if the functionality of the site is the same.

When I click WP icon on Cpanel, it shows me all the sites, and one of my sites changed from having www in the front (https://www.domain.com) to https://domain.com (without www)

Also, when I type https://www.domain.com in the browser, it redirects me to my domain.com. which is not the format I originally set up my site as.

Okay, I see what you mean, thanks for the clarification. I haven’t heard of any issues over at Bluehost or SimpleScripts of that happening. Is your site still functioning as it should (posts and pages working, dashboard functional, wordpress admin you can login at)? If its not functioning as it should, I’d suggest getting their tech support on the line.

Site is functioning, but if I type any of the URLs for the post or pages, it is now redirected to https://domain.com

BlueHost Tech support told me that it is WP is the one that sets that. And I remember I just upgraded WP recently..

It sounds like something in the wp_options table in the database. If you’re wanting the www to come up, then I’d suggest checking the site and home URLs in the database. Here are some directions for that: https://codex.www.ads-software.com/Changing_The_Site_URL#Changing_the_URL_directly_in_the_database