But finally, in the meantime I've got an email from a support manager.
Dear germanszaky,
Thank you for your continued patience as we continue our investigation.
Please could you explain in detail your relationship with barnana*@**.com
Please note that if you are able to provide us with accurate information, we will be able to expedite the investigation and ultimately release your funds and/or reopen your account more quickly. If you provide us with inaccurate information, the investigation can take more time.
Thank you in advance for your patience and understanding.
Apparently they are somehow connecting my account to another one, so I've replied and asked him to tell me why and based on what they connect the two accounts together. I really doubt the other guy/girl placed the same bets as I did, the only possible "problem" I could think about is that (s)he uses the same VPN provider as myself (NordVPN which is very popular), but what could be the odds on a possible IP coincidence?! but hey... I am connected to VPN pretty much all the time both on my cell phone and desktop. I really need it to access different location based online services and torrent as well which is prohibited in Germany, so everybody uses VPN here to workaround the problem.
I will keep you updated on this, but don't really understand why I had to wait almost 2 months for this email...