Upon report from user "Campanella", I have resolved a bug related to the system's email notification. Everything should be fine now. If you still have problems receiving notifications, let me know. Of course, don't forget to flag the "follow this forum" buttons at the forum level, or "follow this topic" at the discussion level, otherwise not receiving notifications would be normal. Unfortunately, Aruba's servers are no longer able to satisfy the latest releases of the forum CMS, therefore it is not possible to update. On the other hand, mail servers now all use SSL certificates for secure email sending. Our CMS version does not support sending via SSL server, so I had to bypass the problem. The solution is temporary but perfectly functional, only for plaintext email sending (which still contains all the information of interest to us within the notification); we are waiting for an update from Aruba regarding the PHP version to release 7 to switch to HTML notifications. If this does not happen in a reasonable time, we will evaluate the possibility of migrating the site and the database to other services that are more up-to-date with current web technologies.
Regards,