If you decide to offer advisory services on your own, then yes there might be some regulatory hurdles. You are not going down that route. Match making should still be fine, am not sure.

Agreed about turning off existing users, but you can carefully orchestrate this to help users find appropriate advisors as a completely opt-in service. I think you can find a scalable monetization model in match making. Not sure what your plans are, but yeah unlikely you'll be able to pull it off in solo mode.

Totally impressed with what you have built.