Basically. When you connect to the server, it will fetch with Steam at api.steampowered.com to verify a player’s steam info. When your server having issues connecting to api.steampowered.com and players joining the server, it will result in multiple POSTs being sent with no signal received back, causing “reused ticket” thus duplicated POSTs.

Especially for Chinese servers whereas the government recently banned Steam, this issue will pop up very often. Use VPN on servers to establish steam connection.

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