I did last night and there was no confirmation after the whole night, so I guess because of the port?
Make sure you're using 2.1.1
so no 2.2 ok
hm... I tried it now 2 times with 2.1.1 and it went through but was pending for a long time. I replayed and rebroadcasted without success. I have now 4 transfers pending nothing confirmed... so sure, that I don't need an open port?
Network topology is very poor at the moment for a number of reasons. It's recommended that you replay unconfirmed transactions after every hour or two that they remain unconfirmed. This is a transient state of the network, so be sure to educate yourself on the reasons if you're interested. If not, then just wait a certain amount of time for the network variables to change.
still trying to replay. 14 pending transfers showing already...
I hope this will work before the deadline...