Is it permissible to promote a collection and business management app intended for spiritual advisors abroad?

I have a client who wants me to promote an app online.
A platform similar to Zoom that allows you to charge for recorded consultation calls.
Manage meeting schedules, clients, and more. This is supposedly a general platform that any consultant can use.
But they direct her specifically to spiritual advisors, tarot card readers, etc.

The advertisement itself also appeals to those spiritual advisors/card readers (in the United States, most of whom are Gentiles, if there is any merit) and explains to them that they can easily advise people all over the world and charge by the minute of the call.
Is there a ban on publishing this?