They offer interest-only loans, don't charge for appraisals unless the deal actually closes, and have great customer service (they actually close on time unlike some of the lenders my clients have chosen against my advice over the years who ask for my time for underwriting the day before closing).

Hoarding is a protected class because it is a disability. 

The best thing you can do to protect yourself is to follow the law and treat people honestly and fairly. 

I've reached out to customer service and received little assistance.

A well written management contract should clearly spell out what is expected of both the PMC and the owner, to PROTECT both and avoid misunderstandings.

Since you generally won't know for sure when a party will end, you can try to protect yourself when entering the party by buying into the type of property investment that will suffer less should the party come to an end.

LLC are favorite protection instruments of course and ideally per property and state specific.

And the only "client" reviews I've seen mention that their customer service is non responsive and difficult to get a hold of once you're purchased their services.

I'm sure Elite has complex T&Cs to protect themselves, but it costs you nothing to dispute the transaction.  

I would want to see the invoice and have a chat with the PM about their responsibility to protect my income.