Firefox 75.0 (64 bits) should not be the problem. Nifty keylogger cannot record keystrokes entered in the address bar or in the search field. Nifty keylogger is based on javascript and can only record keystrokes entered into websites. Can you run a site such as the instant review site, please? It will be interesting if nifty keylogger records your inputs into the text areas of this site. Cheers, Daniela