Forum Academy Marketplace Showcase Pricing Features

For Saas experts

Hi my bubblers
Is there any way to register users separately.
So in my app, my users make their own business page with a domain name. So it’s kinds like shopify.
If I make a sign up function for their clients, the problem is the clients register in my database.
So when they log in or out in one of these websites they will login or out in all . As they still one website. But they shouldn’t know that.
Is there anyway to sort this .
Thanks