How to find the link of the game
1. Go on stats, on the top of the page.
(http://dota.eurobattle.net/la/forum/index.php?action=dlattach;topic=180497.0;attach=16154;image)
2. Search your nickname.
(http://dota.eurobattle.net/la/forum/index.php?action=dlattach;topic=180497.0;attach=16156;image)
3. Find game where you are autobanned.
(http://dota.eurobattle.net/la/forum/index.php?action=dlattach;topic=180497.0;attach=16158;image)
4. Copy/Paste link of the game in your unban request.
(http://dota.eurobattle.net/la/forum/index.php?action=dlattach;topic=180497.0;attach=16160;image)
Important note
Game link only appears after the game has finished.
If you see an empty box, where game link should be in step 3 --> [] it means game hasn't finished yet, and you need to wait for it to finish to have an available game link for your unban request.