Perhaps I'm not understanding you correctly. You've had the same login problem for 6-7 years? Do you mean the exact same problem with the exact same error message? If yes, then have you ever before filed a support case for this exact issue, and what was the response?
If you have been having this exact same problem for 6-7 years with this exact same error and have NOT filed a support case, then why the hell not??
I've never seen a support case go without a response for 6 years.
There are a number of things that can go wrong logging into a game like Entropia. Everything from your ISP dropping packets to a faulty network or wireless connection to a software fault on your computer (just because your computer turns on and your are able to log in and load Entropia to the login screen doesn't mean that it is working correctly,) to a problem with the installation and yes, even possibly a problem on the server side (MA.)
Reinstalling the client is not BS. If there is a problem with the installation (particularly, the portion of the application's installation that communicates with the network stack) that is causing your login to fail, then reinstalling it might fix it. Have you ever tried this before? Having a gold card does not free your system, your network, and your installation of all software problems, or guarantee that you won't have any such problems, any more than having an ATM card will guarantee that you will have money in the bank when you want to withdraw it. It is just a tool to access your account.
If you came to the forum just to vent and complain and not for assistance, then by all means, go ahead, but please say so. If you want help, then please let us know what you've done so far, including as many steps as possible, up until this point so that the forum community can at least try to help you. I can throw darts in the dark all I want to, but unless I know where the dartboard is then my chances of hitting the bullseye are pretty low - and I'm certainly not going to waste time throwing darts in the dark with so little a chance to hit the target.
If you want help, man, then help us to help you.