Why is my Rocket League account banned?
Epic Games wants Rocket League to be a fun, safe, and fair environment for all players. This means that we occasionally ban players who break the Epic Games Code of Conduct.
Player bans are applied on an individual basis and range from temporary to permanent. Players are temporarily banned from Rocket League when they do something that is against the Code of Conduct. Temporary ban types can vary, such as game bans and chat bans, and can last up to 30 days. After the specified time, players will be able to get back on the pitch
Permanent bans in Rocket League are not reversible and are given when a player is caught cheating, for example.
For specific info on Matchmaking bans: What Are Matchmaking Bans in Rocket League?
For info on in-game Competitive Tournament bans: What happens if I quit a Competitive Tournament in Rocket League?