Firefox سپورٹ فورم

I've had a security breach where a Discord user got access to an email account. I'm going through all computers to make sure there is no malware that might be related to discord. I found one item in my download preferences that says "discord' but everything I've tried won't allow me to erase it. Any information on what this might be? and how/if I should erase it? (In fact, I don't know what any of the items are in my content types)

With the update to 115.10.0esr my bookmarks that were on the left hand side of the screen are gone. When I look at bookmarks there are a few, but I had multiple folders for different subjects, I do not find. I would like to have the procedure to return my bookmarks back to the left hand side of the screen with all of my bookmarks, bookmark folders, and other bookmarks like it was prior to the update. Thank you for help, Steve Zimmerman

I am on a MacBook Pro with Sonoma 14.4, and the lastest version of Firefox. The YouTube website will not load. It looks like the attached screen shot. I can access the site with other browsers. I can play a YouTube video with Firefox if I have a link, but I cannot see the rest of the page - just the video itself.

I have the latest FF browser. I'm not using any proxy service, just spectrum connection. when i try to access my credit union account, i get this message

"Error: "WWF2TUh4dnM=" - You're using an outdated browser or are using a Proxy service which is unsupported. Please update your browser or turn off your Proxy to continue, thank you."

how can i get past this? All help appreciated!