1st, you dont have to guess who your next opponent is, the entire season schedule is posted and available to everyone:
Combat Arms EU SND 5 v 5
Your team entered the league in the 3rd week, replacing a team that dropped. Nobody played week one on time and the dropped team had never made it up, so you get to play that game if you make arrangements to do so before the end of the regular season. The second week game was played by thcsts, therefore you dont get to make that up. It wouldnt be fair to take points away from the other team that was registered in the league and showed up and played because THC didnt/couldnt honor thier commitment to play out the season.
So yeah, you will get one less game to play this season, thats just how it goes when you enter the league late.
In the end it shouldnt make much of a difference. The championship isnt determined by your win loss in regular season, that is only used to seed the championship tournament, all teams will have a chance to play for the title in a seeded, single elimination tournament starting after week 7.