I've sold 2 on roofstock. Both properties were occupied and managed by a professional management company who was registered with RS. The process was pretty simple. RS sent out an independent inspector to the property and I got a 60page report. It was a renovated property so I only had minor things they asked me to fix. I had to provide the lease and the full ledger for that tenant who at the time was there 3 months. Every month, I needed to provide updated documents. My buyers were both cash but I know others who have purchased with lending and they use whatever bank they normally use.
Someone asked months ago on this thread- why do sellers dump properties on RS. She made it seem like the owners didn't want them anymore and were looking for an easy exit. That's not the case. The people in my area who use RS do so as an exit strategy.
For people who have issues with RS, I think part of the problem is your expectations. They are not a turnkey company. They don't own the properties. They are basically a glorified broker for tenant occupied properties. They provide as much info up front as possible but like anything, they rely on the seller to be honest. And even when sellers are honest, the AC condensers do break down after the sales sometimes.