I tried it at least 10 times with diefferent Usernames and only one did work now.
But I got the following Message now after succesfull login....
And no.. I did not use any proxys and I will not pay to be "whitelisted" ...
You are unable to post. How to enable posting.
Bitcoin Forum > Remove Proxyban
Your IP address has previously been used for evil on this forum, or it is a known proxy/VPN/Tor exit node, so you are required to pay a small fee before you are able to post messages or send PMs. You can still use all of the read-only features without paying.
Your account contains 22.41 units of evil. To atone, you must pay a total of 0.00090151 bitcoins (0.90151 mBTC; 90151 satoshi). Pay to the address 1K1FW1oCKNdzGmgLck1gKRVW89LCtqmBuq. Once you have paid the full amount, wait a few seconds and then reload this page. If the fee is so small that your wallet is unable to send it, you can send any larger amount, though you will not be refunded the difference.
Alternatively, any forum staff member and some other notable members can manually whitelist you. Paying the fee is probably easier/quicker, though.
If you don't have any bitcoins, you can get small amounts of free bitcoins using the sites listed here. It is recommended that you give the free bitcoin sites the address listed above. Do not collect money in your own wallet and then send the bitcoins to the forum -- this will likely result in significant network fees.
If you find any bugs in this system, email pbbugs-...@.... For example, send email here if your payment is not registered an hour after sending it. You will be permanently banned if you send email here requesting free whitelisting.