You need to remember 30 years ago teachers and school administrators were highly respected authority figures and my Mom with only a high school education of her own was trying to tell these highly educated professionals they were wrong.

Report anything you know about them to the Licensing Authorities in the State you were attempting to do the deal in, as well as any that they advertised as being able to do deals in.  

Do they have :1.Performance Guaranty issued on each exchange2.Fidelity BondErrors and Omissions Insurance3.Transparency about entire organization4.Exchange funds deposited into segregated, interest bearing bank accounts that are separately identified to each Exchanger.5.Disbursement of exchange funds requiring written authorization of the Exchanger6.Exchange funds deposited into highly rated financial institutions.

Either way getting information directly from the local authority will eliminate the guess factor. 

Also, the homes have been inspected by the county housing authority prior to the leasing to the public voucher tenants. 

I hereby authorize a background check, verification of references, employment and a credit check as a condition of occupancy; Signature _______________________________ Date __________The  signature is the pre-authorization.I've been getting TransUnion CRs since 1998 using RHOL.COM

As the author said several times (i am paraphrasing), "if it were true that you could buy some 'system,' pill, or speed 2 minutes a day on a particular exercise machine, each one of us would be real estate moguls, stock market millionaires, and have abs of steel."

However, a new management company took over earlier last year and sent a notice to me saying that I am not authorized to rent out my unit and I have to confirm to them that I am living in the unit.  

There is a one time authorization and then the service takes the money out of the tenant's account each month and deposits it in ours.

(the following is a personal, non-authorative, non-legal suggestion )Serve notice of entry, comment on asbestos inspector coming with you.