Sorry to hear you're having a problem accessing the forums properly.
We have hundreds of users successfully using Microsoft Edge to browse the forums, so unfortunately I can assure you there's nothing wrong with the forums.
You may want to try clearing your cache in order to force a refresh of the page, because it looks like your browser is not loading the CSS stylesheet correctly. Here's some information that can help you clear your browser cache in Edge:
How do I refresh the cache in Edge? - Microsoft Community
Also, if it's happening with more than just Edge, that suggests a problem with your router or computer's firewall software or anti-virus software in accessing all the of the resources necessary to load our pages correctly. It may be that something is in some strange "very secure" setting that it's refusing to load all the stuff that's needed. Unfortunately, if that's the case, it's more complicated than we can likely help you out with here, because there are so many different places this problem could reside in (malware detection program, virus software, firewall, or the router). I would look to see what settings changed in your latest update and undo those settings one by one until you find the thing that's causing the issue.