Password Problem

Avast assigned a “random” password for webex membership but after installing, when I tried to check it out, it comes up with a new window that the password generator
didn’t fill. I looked for a list somewhere of the passwords in the app (Avast Premium Security) and was not able to find anything like that. Meanwhile I obviously didn’t remember or write down the generated password. This has happened another time with the same circumstances but I moved on as it wasn’t as important.
I need to get into the program for a meeting soon. Should I just say “forgot password” and put in my own?