Aug 6 2016
It's down right now. It has been intermittently down and back up since I last posted here.
Jul 25 2016
This problem is continuing, intermittently, every day. I haven't been chiming in because it would get irritating, yet I want to keep this on the radar.
Jul 22 2016
I'm afraid I know nothing about the bot. The nominal maintainer, JaGa, hasn't been active on en.wiki for a month. RussBlau, listed as a maintainer, opened and re-opened this ticket. There's Dispenser, who requested to be a maintainer a few months back, so might be one now.
It's still been unavailable intermittently through the day. It's down at the moment.
Jul 20 2016
This has been failing over and over yesterday and today. It is intermittent. As a frequent user of dplbot, I have to say that the solution has not been found yet.