Yes - the "Agario" channel is broken right now.
I received the first email complaints the weekend before last. Turns out there was upgrade to agar servers/protocol back then, which broke compatibility. So now when the client connects, it gets booted right away (hence you may see some blobs but only for part of a second).
I made a fix which i will submit for publishing and then it's up to Roku deities benevolence. Will notify when available.
I notified Roku staff last week that the channel is malfunctioning, wanting to remove it from ChannelStore till fixed - but apparently the process now is a bureaucratic quagmire with forms to be signed and counter-signed by upper brass. In any event i see Agario is still publicly available for new downloads...
On a side note, RokuCo should fix their process, so that developers can yank away or re-publish a (unchanged) channel in a "self-service" fashion - at any time, for whatever reason they please - just like this can be done in Apple and Amazon AppStores for example. Baring that (till the Co acquires the necessary "checkbox technology"), ChannelStore team people should be empowered to un-publish channel on a simple request from the publisher, with no paper-tiger-trail roundabout.