I signed up for Fundrise too, but I ended up skipping it after getting deeper into the program. 

Seller needed "x" amount to sign over and walk away.

FSBO, Unlisted, Homemade Sign, or vacant and neglected structure.

The banks will look at you personally and want you to personally sign on the loan, but they will be nearly equally concerned with the property and will consider that income to you. 

One suggested signing up for their service plan ($20/month per apartment) which includes one annual boiler checkup prior to the winter to avoid issues like mine and small discount on regular plumbing services (50% off of service call charge of $95 and 10% off labor costs after).Is this something you guys would recommend?

If knowing that you don't know something is a sign of knowledge, then I know plenty!

In this transaction @Marc Whiting would lease a property from the owner and price $X.  

They aren’t a turnkey company but more of an online market place that facilities turnkey transactions .

If you haven't signed a lease, yes, you can raise the rent (as long as you don't treat anyone differently and give everyone an opportunity). 

Also I don't EVER sign a 12 month agreement with the PM, if you don't like something they do you need to be able to get out quickly.