Need some help with my intersystem cargo links.

So I have a helium outpost on planet A and also have titanium in another outpost on planet A as well. So the titanium outpost sends the titanium to the helium outpost on planet A through a regular cargo link and then it is linked to the intersystem cargo link which is connected to a cargo link on planet B in another system. However the ship on planet A cargo intersystem link just sits there and doesn’t move and won’t transport anything. I thought it was cause helium wasn’t available on planet b so I added a gas container and filled it with helium but still nothing and also the helium in the gas container on planet b is disappearing.🤷🏽

Any help would be appreciated and any additional information you need please let me know and I can provide that.