My paying their mortagage payment has dramatically improved their credit score. 

When you pay all cash, you paid full price for that deal, you established a much higher number you have to recover before you make any profits (you have to recover all of your cost before you start making a profit) with less funds to use to recover your cost, and dramatically reduced your total CF and total Property Value.

When you go from a single member LLC (as suggested) to a multi member LLC, (both in the same LLC) both LLC requirements and taxes change dramatically.

With investors retreating to the sidelines, buyers in the market have dramatically shrunk, and price wars have eased.

There are certainly various degrees of not as dramatic that one would need to consider along the way.There a certainly plenty of these that otherwise work just fine without triggering tax issues, but it is something to be aware of and not skimp on the professional help.

GDI has fallen dramatically and is showing a larger spread between GDP.

I have been in a mentorship program as a business owner which I would say changed my life and business dramatically.

I wouldn't expect a dramatic drop there. 

My bookings have already been dramatically down through AirBNB.

So with the dramatic rise in rents, landlords like yourself are trying to rent a "C" class property at an "A" class rent and then being surprised when the "C" class tenants can't afford/qualify for that high of a rent (or the tenants' applications have blemishes more typical of that class).