I'm racking my brain a few days and can't find a solution.
I created a website where the user will login or register using Wix Login / Register and this tool created the "PrivateMembers" database.
When a user is inside the site, he will input some data and this information will go to a second database I created called "InvestoresProject_01".
The problem is: I can not identify in the database "InvestorsProject_01" which user input the information using the database "PrivateMember"
Resuming: I'd like to see in database "investidor Projetc_01", which user did input the information