We receive many messages from customers who used the wrong Google account to initially set up a form, and want to change which user is the owner / manager of the form.
The active user account that clicks "Make This Form Payable" becomes locked to the Google Form as the only account that can then manage the add-on installed on the form. Google products with an add-on installed may only be managed by the installer account - this is a limitation of Google, and not Payable.
How to Transfer a Form
Copying an existing form is very easy 👍!
Step 1 - Make a Copy
Click the ellipsis icon in the Google toolbar > Make a copy
Update the title of the copy to differentiate the old and new forms
How to Copy a Google Form
Step 2 - Share the Form with the New User
Add the new Google user as a Collaborator on the form.
Step 3 - Log In Only as the New User in Your Browser
In Google Chrome perform the following steps:
File Menu -> New Incognito Window
In this new window go to forms.google.com and login only with the new User you wish to use.
Go the Add-On listing page here. Make sure the add-on is installed for this new user. The button will show "Uninstall" if the add-on is already installed.
Now simply go back to the new copy of the Google Form, and go through the 3 setup steps again as if the form was new. (Add-Ons puzzle piece > Payable Forms > Make This Form Payable to initiate setup).