fileserve officially announced, that they have problems with teir api.
Dear FileServe users,
For the next 48 hours, the API will undergo maintenance. This renders some 3rd party programs (JDownloader, Fileserve Manager, et.al.) to not function properly.
We suggest that you use either our Web Interface, IDM or MiPony to download your necessary files.
We apologize for any inconvenience caused
Best regards,
FileServe
this should go untill tomorrow.
Meanwhile the API will work a few minutes till they try s.th. else.
So that could explain why the upload is working only sometimes.
After tomorrow, everything should be normal again ^^