I believe you already have filters and conditions so that only the user who created can edit? Then that user/users need to login. ( has to be in the Users collection ) If you don’t set conditions then every users can create and edit others data.
Yeah. In Adalo for Signup and Login the email and password is compulsory. But if you don’t need to add the password you can remove it and add that on the automatic section ( I believe you are using a form ) and fill it with a value like 123. And then try again. But for Login you need a custom form here.
You need a Input component , a button as a list ( you can make the button as a list by clicking on the three buttons > make a list ) that connected to the Users collection and filtered by email > is equal to > Other components > input ( input component name ) and set the maximum records to 1 and add a Login action that you can find in More > User Login > Log in. And for the email you can add the input from magic text and for the password you can add the password that you added in the signup form ( in my case it’s 123 ). For every user same password and don’t let the user to change ( I believe you don’t because you don’t need a password like Glide ) and it’s because then this will not happen and you will get a error.
Check a similar template that can signup and login with the phone number… : Free template Login/Signup phone number based