Hi KarpovGambit, I'm sorry it's not working in Firefox 71. If you haven't already, can you try uninstalling and installing it again? I've heard some other extensions may cause issues with URLI requiring it to be re-installed, and I'm investigating this. I've tested it in Firefox 72/Win10 and everything seems to be working okay, but if the problem still persists, please don't hesitate to email me with more details like your OS/environment so I can try and replicate to get this issue resolved. Thank you very much and apologies once again!