But I have no problem actually paying them, cause I made so much money.  

Unless there is an infestation caused by the condition of the home, this is a tenant responsibility just like swatting a fly.

In addition, my account has u synced from Bigger Pockets several times causing RentRedi to charge extra fees that were originally explained as cost free.  

If the airport authority would deed the buildings to me, it would cause them to be entered on the tax roll.

However, if this locality has opted in for "just cause eviction"  (which is statewide), then you cannot terminate the lease without "just cause." 

Now, the contractor is threatening to file a **lien** on the property, which could cause major delays and additional expenses.

Also, check to see if your jurisdiction is practicing "Just Cause Eviction", which went into effect statewide earlier this year for municipalities that which to opt in. 

There was client bank account information in the folder and she could have done significant further harm to our business.

However, if for example, the company did not install or disconnect the washer and dryer correctly (such as leaving a valve on) while water is turned off prematurely, causing damage, what language do you put in the Lease to also hold other parties accountable such as ALE and appliance install company?   

Maybe it's the REMIC PSA's causing confusion.