first, please let me apologize for the inconveniences you experienced.
Please note that the reason you have not been credited the bonus automatically upon the deposit is that 1) the minimum deposit amount in order to qualify for this bonus is an equivalent amount to €20 and your deposit was a little below that and 2) you have not entered the bonus code.
However, as a good will gesture we have retroactively credited you the bonus and it is now waiting in your account.
Please note that there is and never was any restrictions whatsoever on your account and it is accessible to you anytime. In fact, I saw in your account that you have logged in only today, so this problem seem to be solved.
If you still have problems logging in, please reset your password or contact our support team who will be happy to assist.