when I have an ad blocker on, a lot of things break (which is to be expected)
when it’s turned off, I sometimes get a 403 for the stream, but that’s to be expected because I’m probably being blocked or I don’t have access
A lot of icons and other things are missing on the page, and that’s a problem with CSS and so on
the simplest thing is to open dev.tools (F12) and look at the console
after you refresh the page
and fix problems
when your site uses HTTPS then all URLs must be https and not http (mixed content)
you have to correct that