We’re in the midst of removing a few builds from a project, but we can’t encode PVR files anymore in it. I checked our account and we have gigs of space left, so I am guessing something is wrong with the Server
Just to close this thread out, at the time you were having problems, the texture processing server was indeed blocked and new conversion jobs were not completing. The server was reset and is now functioning normally. Apologies for the inconvenience.