Thanks for your reply. It seems to be specific to Firefox. I tried with Edge and Chrome and they both work fine. I've messed around with the settings in Firefox and I can't seem to figure out which setting conflicts. Any ideas?
I've been struggling with this for a while. I followed your suggestion here and it seems to have fixed it! I have been having router issues as well and I had no clue AdGuard could have been the culprit. Hopefully the router issues stop as well. Thank you!