Reuters keeps asking me to disable ad blocker but I can't figure out how to do that in Firefox. Apparently I do not have an ad blocker in Chrome but prefer to use Firefox.

Try [[Enhanced Tracking Protection in Firefox for desktop#w_what-to-do-if-a-site-seems-broken|disabling Tracking Protection]]. Does it still happen in [[Diagnose Firefox issues using Troubleshoot Mode|Troubleshoot Mode]]?