You can't cancel a meetup subscription online, you have to submit a ticket.
You can start a subscription online however.
Another sign of a failed company, trying to hold onto those who want to leave.
The New York Times is the same. Rather than bothering I simply cancelled it on the PayPal side.
They send you a series of increasingly emotionally-manipulative emails then give up. It’s a monthly subscription after all, you stop paying then they disable you access to paid content. They perfectly well know they’re doing something shady by making it easy to sign up but hard to cancel. As others have pointed out that’s illegal in some jurisdictions. They won’t want to press it.
The New York Times is the same. Rather than bothering I simply cancelled it on the PayPal side.