Received a call from tenants alleged  mother stating that her daughter had passed away.

Their alleged lack of knowledge about how that all works is irrelevant if at the end of the day they simply didn't meet your criteria.

This made the tenant furious with a nice 5-6 page emails threatening a lawsuit with ADA/HUD allegations, retaliation etc....Ridiculous..I did make reasonable accommodations to allow this tenant to have right to closet entrance in the parking lot and even allowed his wife 2nd closest parking spot since he states she is his "caregiver" after that request was sent in. 

That will tell you if they are legitimately licensed, but who knows without a referral if they are any good or allegedly defrauding you..

The strategy doesn't really make sense when you break it down, people only think it does because it will allegedly cash flow more.

___USA TodayEx-Fox & Friends co-host Clayton Morris leaves country amid fraud allegations, lawsuitshttps://www.usatoday.com/story...

Both units currently rented and allegedly both tenants want to stay. 

I'm anther a claim from a previous tenant that allegedly went through an accident inside the property and looking for medical expenses cover.

Since you will need to repair the doorknob eventually why not do it now and use this as an excuse to document the condition of the property in case the tenant tries to make allegations regarding maintenance.

He has allegedly had issues with Property Management.