As for applications I'm echoing what others have stated and apply it to rent first as that is harder for the tenant to fight should there be a dispute. 

I’m sure most of you are familiar with 5G connectivity. 5G will not only be faster, but it will also serve as the backbone for driverless cars, safer surgical medical procedures, safe drone operation, less traffic jams on the streets and increased precision in manufacturing.Think about how much progress has been made since 1G. 1G connectivity allowed us to talk on the phone using cellular towers. 2G added text messaging capabilities. 3G introduced internet capabilities. 4G made all of the previous features even faster.

The tenant is saying they are going to fight you for whatever reason.  

If you're ready for the investment, Propstream is a great tool to use that has skip tracing capabilities, postcard mail, and more.

It's when you need the full capabilities of a hand or power tool, or even need to stretch the envelope, that you look elsewhere.Start with the Harbor Freight version, learn how to use it, and then if you can see a clear different in quality and functionality in the more expensive tools, buy them.

He may be fighting for his life, or functions to be able to live a life.   

If he sucks at paperwork it is his responsibility as a manager to delegate to someone who is capable of doing it, simple as that.

It sounds like this functionality just isn't worth fighting for in these software's.

Anybody had experience in fighting with city when they messed up?

It wasn't worth the fight so I let someone that knows what they're doing do it for me.