I had a version of Firefox after March 20 that was BAD due to a scam that I got and did not recognize it. After the 20th my email was used to send a bad change to Firefox and I can't get anything to work. I needed to change my email password to halt the persons that were being sent the scam. I need to a have a version of Firefox to install to remove the bad dlls from the scammer which were on the Firefox that was comprimised. My old Firefox (before March 20th 2026) was working fine Can you help?