How do I unlink my account login from my google credentials?

When I first started my Jotform account, I chose the "sign in with Google" option, so I never had to set up a separate Jotform password. However, I no longer want my account linked to my google credentials. How can I preserve all the stuff in my Jotform account but change my login so that it uses a separate id/password (and unlink my sign-in from my google ID)?

I tried going to Settings > Profile, thinking I could just set up a new password there. However, it's asking for my "current password."  I don't have a current password, since I sign in with Google. Can you please advise? Thanks!

Since you logged in via your Gmail, you do not have the JotForm account password. Please request a password reset email from our login page. After resetting the password, you can log in with your username "jeanette.m.brooks" and your JotForm password.
Also, you can manage Gmail permissions from the page below. 
https://myaccount.google.com/permissions