Sorry for the late reply.
How many SMB folders would appear in SKYBOX when you select Network Channel please?
Could you provide a screenshot of the Network Tab to us at firstname.lastname@example.org ?
Meanwhile, Please follow the steps below and send us the log file so we can check the issue:
1. Connect your device to PC and create a file named skybox.debug under \SKYBOX path. Ignore the file format if asked.
2. Restart SKYBOX on your device.
3. Try to connect to your SMB with the correct username/password
4. Finish all the steps above and send the log file /SKYBOX/SKYBOX_debug_log.txt and Android/Data/xyz.skybox.player/Files/PersistentData/OutLogs.txt to us.
Thank you and looking forward to your email.