Is there a service for creating landing pages with personal accounts for various user groups and interaction between them?

Question

Computer networks

Are there services that allow you to create many personal accounts with the ability to group by functionality (customers and visitors) to organize meetings?
imgshow.ru/ - you need something similar.

Answer 1

For domestic users, Liqpay is good (for both Ukraine and Russia), Interkassa. And for Western countries, we use 2Checkout because there is no way to withdraw money from PayPal.