Pine64 NAS fan problems

[User 11259]

Hello all,
I'm new to this forum and hope you guys can help me figure out what I'm doing wrong.

I bought some parts from the Pine64 shop:

- ROCKPro64 4GB Single Board Computer
- Fan for ROCKPro64 Metal Desktop/NAS casing
- ROCKPro64 Metal Desktop/NAS Casing
- ROCKPro64 12V 5A EU POWER SUPPLY
- ROCKPro64 PCI-e to Dual SATA-II Interface Card
- ROCKPro64 20mm Mid Profile Heatsink

I got it all set up pretty quickly thanks to this well done guide here:

https://www.youtube.com/watch?v=_UeeklKo0Og

my only issue is, that the fan won't start spinning when the RockPro boots and I can't figure out why.

Sorry for the Imgur link but the three pictures are too big for the allowed 2.93mb
https://imgur.com/gallery/ax9zBXw

Although I don't think so and the slot says "FAN" right next to it did I plug the fan into the wrong slot?

Any help would be much appreciated