It depends on which service you select. SpeedUp 2.0 is not a monthly subscription, it’s a one time payment. SpeedUp 2.0 is a 28 day test (from when you sign up for your SpeedUp 2.0 Test), including weekends. You do not need to cancel anything.
The other two services ‘TradingView/SpeedUpTrader’ and ‘Other Platforms’ are monthly subscriptions and must be cancelled.
Note: This only applies to accounts started after October 6, 2020.