They offered a 20 % interest premium and 5 % profit sharing (i know too good to be true and there is something wrong).

Do you feel safe living in another country and what about the laws there (e.g. being wrongly arrested and imprisoned vs. in the USA there's at least due process and our Constitutional rights)? 

I'm assuming you purchased without getting a title insurance policy yourself, if I'm wrong, I suggest you submit a claim to the insurer. 

As an added bonus tenants like to complain about what is wrong with a property, and sometimes the landlord doesn't know about the things they mention especially if they are long distance and have a PM.

Some friends and family are interested in buying in to the right deal, but I don't understand how they get paid (wrong specialty I guess).

Get this wrong at your peril.

We learn when things go wrong. 

There is much more nuance to investing than just HELOC vs cashout and I think investors miss a lot of the finer details and often select the wrong tool for their objectives. 

Your gut is telling you that there is something wrong with what they are selling.

Too many investors get scammed into buying the wrong properties in the wrong Neighborhoods:(That's why we're working to list and rank all of Detroit's 183 Neighborhoods on our website.