How do I stop monitoring a website?

I had a website I had monitored using Jetpack.

I’ve let the domain expire

I’m bombarded with 200 messages a day saying the website is down

How do I remove the website from my Jetpack control panel?

It’s impossible. I’ve spent 2 hours over a few days trying to login.

PROBLEM: the Jetpack settings page doesn’t load.

In the emails where I am told the website is down, there is a link to this page: https://wordpress.com/settings/security

Here I see ‘Select a site to open?Settings‘.

It stays there for ever and doesn’t load anything. No real content appears.

I’ve tried to access Jetpack through other ways – but there’s no way of getting to a page where I can see all the websites I have monitored.

What am I doing wrong?

Thanks.