Hi Jambo,
maybe you don't have setup the portforwardings right. You can easily check it in the updater if there is on the bottom a red icon or a green one. If it's green everything is ok with your firewall.
And also it depends if someone wants to download stuff during the time you are seeding. If nobody wants to download anything you cannot have upload
By now we have also a few 100mbit server helping for the p2p network, but they should be gone in the next few weeks/months.
Best wishes & thanks for helping
Marian