How to clear proxy in zoom

Hi all,

I use firefox as my web browser. Ocasionally, I employ a firefox profile with a proxy server, for access through my university, but normally I work without proxy. Recently I accesed zoom (with the application) after using that proxy and since then each time I enter a zoom meeting (either as a host or as a guest) zoom keeps asking for the proxy's user and password. I cancel the dialog but it keeps popping up frequently. In the help, I found in the help that zoom detects automatically proxies, but not how to cancel/erase the setting once it is detected. How can I solve this issue? Thanks all

Fernando