Can't make backend edits of wp

So I successfully migrated a test site over to dreamhost. However all changes I’ve tried to make through the ftp have not shown. I’ve spoken to support and they flushed the dns on there server. That was only a temporarily fix. I can edit things through the front end no problem. Its the backend where I want to make edits/ Any suggestions?

What kind of edits are you trying to make?

Have you disabled any or all plugins to try and make the ftp edits?

I’m trying to edit some plugin functionality and css that was broke when I migrated the site

Yea I tried deactivating them and even removing them completely. nothing

do you have cloudflare or a CDN running? or any caching plugin?