Does the computer have to have an open input port for claiming? I thought it should work withouth, because its a light wallet...
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.
Can you elaborate them briefly here?
Will replaying it a few times after each other also help?
Sure, but try to do further reading for a better understanding.
Reasons for slow network:
Poor topology - The #1 most important thing to understand about IOTA is that it's a complete paradigm shift from what you're used to. When node neighborhoods are shoddy, poorly kept up with, and poorly connected, it's very difficult to get transactions humming. This is exacerbated when the entire network is just a handful of full nodes, as it is right now. One of the biggest fixes for this problem is simply organic growth of the network.
Very few transactions - Every transaction sent requires two others to validate it before being confirmed. When there are 2 transactions per minute, waiting for 2 validators can take a very long time. Again, paradigm shift! As the network contains more and more transactions, confirmation times go down while network capacity increases. The worst these things will ever be is right now. Fix: organic growth leading to increased number of transactions per minute.
There might be a few other more technical reasons for slow network right now, but the above two are the most important to understand in the context of a forum like this.
http://iotasupport.com/whatisiota.shtmlRead over this for a general introduction