What engine can be used to work with subscribers?

Question

CMS

A small company that installs and maintains intercoms needs a website to work with subscribers. The point is that each subscriber can go to his personal account and see his balance (debt, overpayment), the time of the next payment, the archive of payments, make an application for connection or repair, and the like. On which cms is it easier to implement? Maybe there are ready-made solutions? Or is it easier to write from scratch?

Answer 1

In theory, you can cheat on WordPress, for the most part using the standard functionality for your own purposes, although this can be done on anything))

Answer 2

in my opinion, for such purposes it is always better to use something of your own or a good, but paid, engine created to solve just such problems.
It will be much better than blog engines with a bunch of crutches)