To cancel a recurring event, you will need to go to Team > Schedule > Recurring

Once you are there, you can click the prohibited symbol on the right-hand side to cancel the event

Once clicked, there will be a popup saying:

"Are you sure you want to cancel this recurring event? All future events will be marked as cancelled, but can be reactivated later."

If you want to proceed with cancelling, you can click the "Yes" button

To Reactivate the event, you can click the repeat symbol where the prohibited symbol used to be

Once clicked, there will be a popup saying: 

"Are you sure you want to reactivate this recurring event?

Any events that have already taken place will still appear as cancelled events, but any future events will become active again."

If you want to proceed with reactivating, you can click the "Yes" button