Sorry to hear about the recent issues you have been experiencing.
Please open Studio One.
1. Make sure in Studio One that you are not connected to SoundCloud. Go to Studio One > SoundCloud Client and disconnect.
2. Close Studio One.
3. On OS X, go to Utilities > Keychain Access Find and delete all SoundCloud entries. (Windows Users go to Windows Credential Manager).
Relaunch Studio One and reconnect to Sound Cloud. See if the issue has been resolved.
If you are still running into problems, please submit a support ticket.