How to cancel a reoccurring payment

I cannot find how to stop a donation that is re-occurring.

It’s strange, it shows up on their checking account ledger as PayPal and the amount. One month it comes out of the checking account on the 9th and the next 7th. It shows in their checking account, but…

But, the transaction does not show up in their PayPal account. It is not listed at all but does automatically come through.

So how do we cancel this?