AUTOMATICALLY DISABLE DOMAIN MAPPING WHEN PRO SITES SUBSCRIPTION EXPIRES

There have been several updates to the Domain Mapping and Pro Sites plugins, but On my sites, domain mapping continues to function after the pro sites subscription expires.

This clearly defeats the very purpose of adding Domain Mapping to Pro Sites in the first place.

I want to bump this issue every couple of months so the developers give it the priority it requires.

Please repair this broken functionality.

Thanks,
Michael