Too many people flake out and you don't want to have to pay for reconnect.   

In my particular market, a simple one man handyman crew would be the proper hire for this job and we don't need a union contractor, GC, or licensed plumber to disconnect and reconnect a toilet and sink.

It's great to see your lead measures but I would re-connect with your initial annual goals and make adjustments.

Looking forward to reconnecting with you soon. 

For example, I know CI plumbing stack replacement is not necessarily uncommon, but it would seem to require several weeks where the property was vacant for the plumbers to remove, install and reconnect the waste lines in a 3-story multi. 

Stessa has issues with their bank feed breaking connection frequently (every day) so there is an unnecessary amount of manual data entry (once you get tired of constantly reconnecting and just go full manual). 

I disconnected the locks individually within Locks Manager and reconnected them and that seems to have fixed the issue.

Meet with them regularly to reconnect.

The lock itself will still work via batteries if there is a power outage or the wifi disconnects, you just wont have app features until power or wifi has been reconnected. 

Just find a way to re-connect, be a friend, see if you can add value somewhere in their life, etc.