Slightly incorrect, the mod there stated that players with this issue might need to *USE* a VPN or Proxy to enable themselves to log into the game. What a VPN or Proxy server does is mask your IP address and allows you to connect to sites that have previously been forbidden for you to connect to. The IP blocking actually comes in much further up the chain than at R2, Aeria or their servers. If your country for example has restrictions to online gaming sites, you will likely need to use a proxy or VPN service to bypass this and cloak your IP address to get around their checkpoints which stop you from connecting.
So if it is indeed why you're getting locked out of connecting, YOU will need to get yourself set up on a VPN or proxy server to get around the block. It isn't something the game company can help you with really unfortunately.