I am vary weary that these might be scams.

The letter may be a scam, but you should have your attorney look at it for you in order to be sure.

Is this a scam or normal?

Everything sounds generally positive.https://www.biggerpockets.com/forums/50/topics/350898-funds-for-flipping-aka-f4f-scam-or-real-deal?

It's not hard money, it's not private funds, it's not a scam, it's not a phishing site (we've been called everything in the book, trust me)...it's yet another funding source fulfilled by a company with a A+ BBB rating that's been around since 2008. 

I do not have enough information to know for sure, but everything about this deal screams scam to me. 

If the box still magically comes up with a number greater than 4.0, scam confirmed. 

They are running a scam on you.  

This sounds like you may have been scammed by someone renting out someone else's unit. they take the first months rent and security deposit and run before they get caught. you may want to go down to the courthouse (or online depending on your county) and find out who the owner is and contact them if you are unable to reach the PM or whoever rented you the unit.

Don't be too trusting right away like I did though, you will have to feel people out because some people in these groups are scam artists too.