This is the key failure.
Anyone's whose regularly procured cleaning services knows the dance. You find a reputable cleaning service, they send out a cleaner. If you don't like them, you keep asking for a different one. When you find one you like, you ask them what they'd charge if you deal with them directly.
Why should they pay an app developer (or cleaning service) a cut of their profit when they can just show up and earn it themselves?
Most of the house keepers I've known did this until they'd built up enough of a consistent clientele that they could break out on their own....eventually building their own "crew".
Cleaning services are only good for businesses who require a paper trail for tax deduction purposes and who aren't as price sensitive as individuals.