Have you done another round of submissions?

I did 4 submissions in a rural area last saturday. All are in the same L13/L12 cell (only 3 of them share a L14 cell). None of them were upgraded. 2 got accepted very quickly (each one on its own L14 cell), and now the other 2 are still in queue.

My 2 hypothesis to why the other 2 got stuck:

• Only the first 2 nominations, per player, in a given S2 cell (unknown size, but probably a size lower than L14) get max priority on Wayfarer
• When the second one was in voting, I used an upgrade (in a nomination very far away from there), but as upgrades are bugged it somehow messed up with my whole queue of nominations

What do you think about this?