I have subscribed to several threads and routinely receive notifications when there are postings on these threads. Lately, when clicking on the threads link in the notification (in msg center), I get the below error msg:
"Sorry, you are not authorized to view this page. For assistance contact the site administrator."
Does not happen with all notifications though. Below msg was on a notification for a post on "Kindle unlimited collection" thread and the link therein was referring to indo-investasi.com/node/812023