Matt says he works on the documents but if that is true elephants fly.

Is it a reputable company and will the documentation provided from the study hold up in an audit?

We use RentRedi for tenant screening and management, lease documents, automated late fees, messaging, maintenance requests. 

They cannot continue a lawsuit on your behalf if you have not authorized it.I would send them a short demand:"You have five business days to stop the lawsuit and turn over all documents, funds, and anything else pertaining to my property.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

This is a document the Landlord must sign in front of a notary, by which the landlord is swearing that he property delivered or "served" the Tenant.

Would you have any recommendations, in your experience, for what to look out for in the documents that would be red flags or items that would negotiable?

. - So, recommend having that first hire document the crap out of what you want them to do.

They worked with me and had no issues explaining the steps and documents they needed from me.

You may also need to provide additional documentation, such as proof of income and employment, and may need to have a co-signer who is a U.S. citizen or permanent resident.In terms of buying with an LLC, it can be a good option for some foreign buyers, as it can provide additional liability protection and potentially offer tax benefits.