steemit wallet here doesn't work

First of all, I saw that my wallet 'isn't powering up' for a day now, it is stuck just under the 100 STEEM POWER. I wanted to power down because frankly I don't like this wallet here, I always have problems. So I am trying to power down, doesn't succeed. It says: 'Transaction broadcast error'. After that I decided to search for the technical department here, which doesn't exist? I find that strange, so what if you have problems like me, you have to solve everything by yourself? That is not professional at all. I am for more than 1 hour busy with this. So where can I address this issue or how can I solve it?