Okay. It's either bugged or the /olympiadstat command is lying to me.
It says that I have 60 matches 1 vs 1 per week to participate. Last week I did Monday-Sunday 10-12 matches every day for daily quests. Yesteday I did 6 matches and the olympiad manager tells me I cannot participate in any more games. It says I've participated in 81 games and I have 0 matches 1 vs 1 left.