Since an overwhelming number of people are currently playing private matches, the issued match IDs will now expire after two hours instead of eight as of 01:11 a.m., Dec 29 (PT).
This measure is to enable more private matches from being made.
Private match IDs issued after the above time may expire after two hours, depending on how many private matches are being made in the entire game unless the players are in an ongoing match. When this happens, please create a new match ID to participate in a private match.
Thank you for your understanding.