If my tenant skips, I have their permission to rerun their credit in a few month, which is an easy way to figure out where they are living so you can serve/obtain judgment/garnish if necessary. 

I highly recommend using a third party pet and animal screening website that can verify whether the dog is in fact a legitimate service animal by asking HUD-permissible questions and requesting and checking documentation.

I was told it was a one-time charge with lifetime access.Last week they charged me again, entirely without my permission - $1,080. 

How hard is it to ask a couple of your clients permission to use them as a reference?  

That doesn't give them legal permission to stop paying rent.I would send the tenant written notice apologizing for the mistake.

The water company shut the water down on Apr 2019 and the tenant took it to himself to create another account without my or the PM’s permission.

The water company shut the water down on Apr 2019 and the tenant took it to himself to create another account without my or the PM’s permission.

If the tenants are good housekeepers I hold open houses while the tenant is still in the property (with their permission) otherwise I wait until I get it cleaned out. 

She has not yet provided a letter or proof of insurance, however, with our clause that states "no additional pets allowed", not only has she brought in her boyfriends dog, which is also a Shepard, another of the room mates has now brought in a cat without permission.

I had access to non-public data through them and depending on whether or not you have permissible reason to pull non-public data, you should be able to use them to find almost anything someone is connected with.