When you try to download as guest (maybe only over a size limit not sure) it gives some like 503 error or such instead of saying you need to be logged in.
Unable to download plugins while not logged in
Login will be required eventually, but shouldn’t be requiring a login at the moment. @Calytic
No issues here, 503 "Service Unavailable" are usually temporary errors. What plugin are you trying to download?
It always happens dude, for a while now, none specifically. I just go to download an update for this or that, and i get some http request deny page.. not sure it was 503 tbh. Maybe its not even login related but it always works after i do. Maybe a weird browser caching issue or some thing then