You have no case.If the lien was bc seller has a brother on title who won't sign off then you're owed your EMD back.

If you are going for college students you will most likely also have their parents co-signing for them since most of the students will probably have next to no credit score or income. 

Gather emails with something like Stayfi, use a qr code to have guests follow you on socials or leave their emails in a sign up for discounts coming back, use a Meta Pixel on your direct booking website or landing page and then do a retarget ad campaign to them, offer "Family and Friends" promo codes to guests when they come back through an auto message a couple of weeks after they have left, etc. are some that I use.  

Keep in mind that you will probably be required to sign a personal guarantee of the loans.

I just signed up last week.

They knew the property address once you signed up with them, so to pull that late in the process seems more disingenuous on their side not yours.

It's difficult to see how a tenant will be after screened and signing a lease.

This is correct, so I would disclose every aspect of the sub to and how it relates to the seller, perhaps going so far as to insisting the seller sign off on an acknowledgment that he understands the ramifications.  

They are more motivated to get the seller to sign with someone without an agent because they get more commission.

How did it feel signing those papers and knowing you just took that leap?