Unable to manage subscriptions

I received several user support requests in the past couple of days letting me know that they cannot manage their subscriptions anymore.

The page displays: You have requested to manage your subscriptions to the articles on gHacks Technology News. Follow this link to access your personal page:

But there are not any listed on the page and there is no link either that one could follow.

I tried this for myself, added a new test account and I’m getting management options, e.g.

https://www.ghacks.net/1000/10/1/comment-subscriptions/?sre=1041f10a56ca6ebb3324d31fdde2f977&srk=39c429a86d62e10bd0c220f9e399b88e

I’m at a loss here as to what is going on. Can you please assist?

Thanks!

https://www.ads-software.com/plugins/subscribe-to-comments-reloaded/