Need help with Nest Heatlink wiring for heat pump

[Maba]

Hi community,

I need some advice for my Nest Heatlink. Currently, the floor heat pump does not turn on even though it's wired directly to the Nest thermostat. The blue wire to the right was loose when I opened the box so I screwed it back in but I am unsure if this is the correct set up.

Could one of you check and spot for errors?

I manually reset the Grundfos Alpha 2L floor pump but it's still not working.

https://drive.google.com/file/d/1f8Rv6gqXYdTGt6vRIsHj9hcLwQp6NjvP/view?usp=sharing 

[Frustratedddd]

You need to allow the picture to be seen by others, it does not at present.

Would be far easier to just to upload the picture!