@aapgcup
My suggestion would be to UPDATE your USER-AUTHENTICATION with the new “authentication”-API…first.
https://www.wix.com/velo/reference/wix-members/authentication-obj/login
The same for onLogin-processes…
https://www.wix.com/velo/reference/wix-members/authentication-obj/login
You are using a depricated and outdated one.
If you want to start when changing one of your Check-Boxes…
$w.onReady(()=> {
$w("#checkbox1, #checkbox2").onChange((event)=> {check_Function();});
});