No Convoys have access

[6th army]

For some reason, my convoys don't have access to any of the ports I control from my naval invasions. There isn't opposition in the sea or air in the way of the convoys and & control every port in the sea region apart from neutral Sweden.
Help?

[Trip]

Same problem here. Playing as Britain and can't connect convoys to East Africa even with total Naval supremacy and level 10 ports on both sides. I'm going mad trying to figure this out, I have about 1400 hours in this game, and I haven't got the fainest clue what the problem is

[mk11]

There is a bug - the game selects a source port for the supply route. It ignores the presence of blocked straits and sea areas.

E.g. as the UK it might select London. If you have closed the English Channel to convoys it won't then change to use Liverpool.

[TasteDasRainbow]

This is speculation, but I believe it has to do with convoys being blocked from different straits. I had a similar issue trying to send supply convoys to west africa from the mediterrean because I did not have access through gibraltar. This is especially problematic because we cannot choose the route that the supply takes in most cases, and so cannot direct a free path to carry those supplies.

[Segert]

This new dlc. Broke everything related to Naval stuff. So im not suprised it did this too.

[Phe123]

new patch and this is broken ++ such a easy check that it works as well -- england first move! block channel from traffic...