Riot temporarily disables Teamfight Tactics on EUW servers - Dot

European players have faced long log-in times after the mode's release.

Riot enables Teamfight Tactics queue time throttling to cope with massive launch demand

Disconnection issues reported, ranked queues disabled on League of Legends' European servers - Dot Esports

How to fix LoL's 'unable to connect to the authentication service' error code - Dot Esports

Teamfight Tactics patch 13.14 notes

ELO and MMR system is completely broken in BR server compared to any region. : r/leagueoflegends

Fundamentals: League of Legends New Player/Beginner Guide :: League of Legends Strategy Guides

When does LoL's new Arena mode release? - Dot Esports

Riot enables Teamfight Tactics queue time throttling to cope with massive launch demand

Featured game mode, League of Legends Wiki

Teamfight Tactics Patch 13.7 Notes