Recently, I have been trying to get all of my friends to play tanki online. Whenver I try to send the link that is given to me in the 'invite friends' bar to my friends, the link always leads to a page saying 404 error. What am I doing wrong, and how can I fix it? If I don't give them the link that was given to me, I wont get crystals for inviting them. The same problem happens when I invite them by email, or make the banner.