From this thread : Frequently Asked Questions about the Signals service
Can I unsubscribe from the Signal in the same way I subscribed to it?You can cancel the Signal subscription in My Subscriptions on https://www.mql5.com/en/signals or directly in the terminal: see MetaTrader 5 Help → User Interface → Toolbox → Signals: Unsubscribe from Signal.
If you unsubscribe from a fee-based Signal, the amount blocked in your
account for payment of the subscription fee will be deducted from your
account upon canceling the subscription.
How to Start with Metatrader 5
newdigital, 2013.01.23 07:34
Concerning signals ... I see some members asked about how to unsubscribe from the signals. I subscribed to some free signal 3 days ago (with no problem so far). Just some information/topics about the signals which I collected about signals: