I recently logged into my long-dormant DO account to kick the tires on their now-GA managed Kubernetes service and to contribute some CPU cycles to a distributed computing project I'm interested in (not cryptocurrency, I swear).
I first requested and was approved for a droplet limit increase (to 25). I started 20 nodes, deployed my very CPU intensive workload, and 12 hours later my account was locked and my nodes all went NotReady.
I immediately replied to the abuse ticket explaining my usage. 4 days later, my account was unlocked and received the "allow high CPU" flag... but they billed me for the nodes as if they had been running that whole time. I asked for a credit (5 days ago) and they haven't replied yet. Probably a little busy over there right now.
So... I'm not too thrilled with DO. I get that cryptocurrency ruined everything, but this has been a frustrating experience and I'm glad I was only using it for a pet project.