I've not been able to access the Amazon Video channel from Playon Cloud. I tested and it still works on my desktop version. I contacted Support who confirmed there was an issue and that it would be fixed. No ETA was provided and now, this morning, the channel is gone altogether. I checked for an app update, but see none, at least yet.
What's the status of resolving this, including an ETA. Amazon Video should be a pretty high priority, I would think...
BTW, my initial ticket is shown as Solved, I've even gotten a request for feedback, for an issue that certainly hasn't been solved yet. Maybe you should add (or use) a status like Pending?