Company Account not being applied to current email

My union has given me a professional zoom account but when they send me the log in link, it doesn't give me an option to make a password. Since it's my personal email, I already have a basic zoom account set up with that email. I can't seem to find a way to have the new zoom account applied to this log in. I've been using the google log in option to get in. The only time it has worked is on the first time I opened up the link from the union. Does anyone know if the issue is the fact that I already had a basic zoom account with this email?