I can see my subscriptions and have been able to click on them to cancel or change in the past....

However, when I go to click on the subscription I need to cancel (or any subscription for that matter) they won’t open so I can manage them. I have been known to buckle down security on purchases in the past and not realize how it will affect access/functionality of other areas, but I don’t think I did that. What would be causing this snafu? I need to cancel a subscription within the next day so I don’t get charged. Thanks!