I can't cancel my engineer appointment

I've got the exact same problem as this person.

Can't accept cookies | Virgin Media Community - 5638605

I want to cancel my engineer appointment but the cookies buttons do nothing, so I can't cancel my appointment.

Test it for yourself here.

https://www.virginmedia.com/help/how-to/broadband/manage-appointment-fault?utm_source=braze&utm_medium=sms&utm_campaign=cable_cus_sms_82245_52007_engvisit_order_confirmation