Follow the lease, letters from lawyers, see her in court?

The borrowers could be paying their mortgage to scottsdale or scottsdale most likely sold the loans - when you invest in a syndication you have rights to manage the specific assets unless he gets a court order which there are also many other investors involved. 

The search function leaves much to be desired, but you'll do best searching "FlipSystems" as one word:https://www.biggerpockets.com/forums/79/topics/1182640-lesso...https://www.biggerpockets.com/forums/67/topics/1204806-seeki...https://www.biggerpockets.com/forums/48/topics/1098187-flips...https://www.biggerpockets.com/forums/79/topics/1188268-flips...https://www.biggerpockets.com/forums/92/topics/1181695-is-fl...I admittedly have not read every reply, but it seems like a sea of red with "Amy B." being the only positive sounding reply on this thread: https://www.biggerpockets.com/forums/67/topics/1174732-calli...Is that the person you spoke to as a reference that's his girlfriend?

You file for eviction and they employ multiple delay tactics that extend your court case 3-6 months without batting an eye, all while not paying rent.

It was more of a headache proving that I was the property owner in court to represent myself. 

So even if you pick a state with stronger protections like WY or NV, the cause of action arose in the state where the tenant fell, so likely that the court where the accident happened would have jurisdiction.

Wholesalers typically do not carry Errors and Omissions (E/O) insurance, so even if the court rules in your favor, they might not have the financial means to compensate you.Furthermore, ensure that a reputable title company handles the transaction, as some companies may cut corners.

If there’s any equity get your lawyer in to court and try to place a lien on them. 

It also a property management piece built in with lease management functionality and maintenance requests. 

If they fail to pay, then you can consider taking them to small claims court or filing with a collection agency.