I don't know the detail as far as the tenant paying rent or not, if there's a lease contract etc.What questions should be asked before buying this investment opportunity?

On a clear day and with tenant notification, get a hose on the outside and spray it at individual windows and doors in the suspect rooms. 

There is 0 cash flow for months in now. sounds like they are trying to make real estate like Bitcoin.. which of course its not. if you U want a lawyer you need to figure out what state

This should be your strategy if you’re upside down on the property, not if you've done well.

Because eventually you WILL have a tenant nightmare, it is the law of averages, do landlording long enough and it WILL happen, not if but when. 

Let them know of the situation, get your insurance transferred and then let them go to work for you chasing down the deposit and what not. If

I've been to these courses and many times they're framing it to be so easy... it's not.  If

10-4I received a notification about the post and was able to visit the zoom link. 

You can set notification's so that you know who is going in and out of the house but that just becomes information overload.

Walmart is selling these TASCO cameras for $28 in Sports and outdoors.Here is a photo taken two years ago of a break in that triggered a connection with the owner of the property and due process notification of their unpaid tax liens.Break In