Linkstation520D help! Media Server empty folders

[angron]

Hi,

This is my first ever attempt at using network storage. I have moved the majority of my media onto the Linkstation. Around 2tb.

It was working fine, i could access whatever i wanted from any of the smart phones in the hoouse, my laptop, ps4 and smart tele with no issues.
I restarted the linkstation after having a few connection warnings appear, all of a sudden i cannot access any media that is split into mutliple folders.

Example if i go to
Public - Film - 127 Hours, no issue, the film is there can be played on any device. However,
Public - Film - Die Hard Trilogy - Die Hard 1, it says the directory is empty.

This is on every device. Unless i connect to the linkstation via SMB (which i cant do on some devices, like the ps4)
(Im guessing this has something to do with the linkstaton media Server being UPNP and the other method being smb.)

I feel like i'm just waffling now, but if anyone has any advice or tips i'd welcome the help. I am a beginner please be patient with me! haha!