While that may sometime be true, full disclosure to all parties should eliminate any ethical or moral concerns (imo).  

The last two hours were with the legal team at MR and they confirmed there can be no other up front charges beyond the one month’s rent cap.

Really your advantage is using your legal prowess to better appraise future deals. 

.: I haven't passed this past legal review so for what its worth: Part of my standard requirements for everyone include income is at least 3X rent, minimum credit score, say 640, Clean record and no evictions as well as deposit is paid in full at signing of lease and 1st month rent is paid in full prior to handing over the keys.

Hello Vanessa and welcome to the investment party!

Start by talking to a cross-border CPA and attorney to handle taxes and legal structures properly.

After a grace period of 1.5 days give another notice and mention legal action or law enforcement5.

They seem legit insofar as everything seems legal and kosher.  

Be mindful of a gift tax implications if you sell a house for less than FMV.Also be mindful of transactions between related parties when selling at a loss.

But I just want to start the conversation so we can negotiate the terms so it's beneficial for both parties.