I could not find a way to get the old password.
Soooo.... I had to go back to Comodo/Sectigo and login then re-export the certificate.
At that time you can reset the password.
HOWEVER, I believe that triggered Microsoft Edge to begin blocking our apps because according to Microsoft a new certificate starts our "reputation" over again. They claim it is now resolved after a number of customers have installed. But just wanted you to be aware of that potential issue.