I read through the Florida Statute on residential tenancies because this statement by your property manager made me question a practice that I have heard a number of people using.

I haven't seen their final title policy yet, nor the deed.After I signed the closing package, wired the money, it has been nothing but silence.My attorney is fuming, even more so than I am LOL.On the poorly marked up title commitment letter which we saw that were dotted with errors, they have this language: "Any policy we issue will have the following exceptions unless they are taken care of to our satisfaction: Any lien provided by County ordinance or by Chapter 159, Florida Statutes, in favor of any City, Town Village, or Port Authority, for unpaid service charges by any water systems, sewer systems, or gas systems serving the land described herein; and any liens for waste fees in favor of any County or Municipality."

Generally State statutes govern the applicable requirements and responsibilities of these agreements.

Can you cite a statute (in any state) that would support your claim that this prospect, who "feels like they aren't being treated well" will be able to 1) identify the statute in violation, and 2) successfully file a claim in civil court that "has a good chance of winning"?

The second will show you that they have a 4 Year Statute of Limitations which they will never obey.

Therefore, the new "lender" may not have an obligation to provide a satisfaction for a mortgage they didn't purchase.On the good side, if you can't get a corrected release, your attorney might be able to file a declaratory judgment action to 1. reform the recorded release to correct the error or 2. since I believe NY has a 6 year statute of limitation on mortgage foreclosure and since you wrote it's been more than ten years since you paid off the debt, it's possible the Court would rule the mortgage is no longer enforceable and thereby nullify it as a lien on the property.I don't know what you're trying to accomplish that brought the error to your attention but if the problem is with a title company refusing to insure title without exception for the mortgage, depending on the error it may be possible to convince them to overlook the error if it's plain on its face. 

@Guy EastYour lease renewal notification should align with your lease and state of municipalities statutes.

I've read the Florida statute. 

"Sounds like" is no substitute for educational research by studying applicable statutes and performing due diligence. 

You need to be able to defend every line in a lease, in the context of your state statute. https://docs.legis.wisconsin.gov/statutes/statutes/704.pdf