I am not sure if this has anything to do with having a student license, but I am no longer able to render through the cloud anymore. I have been rendering ever since a week ago and now it tells me that I need a subscription?
As mentioned on Twitter, there appears to be a problem with the Rendering entitlements linked to Education Community licenses. We're in the processes of investigating this issue and will keep you updated as more information becomes available.
I apologize for the inconvenience and please let us know if you have any additional questions.