Back when the project started, we opted to use Google Code for tracking issues. As of 2015, Google are closing down their service. We have now migrated to a tracker hosted on our own site.
The new issue tracker can be found at https://prosody.im/issues/ - update your bookmarks
If you were subscribed to notifications for any issue reports on Google Code, I'm afraid we were not able to access and export that information. If you wish to continue receiving updates, you will need to locate the issue on the new tracker (issue numbers are the same), and use the 'Post and star' button, after entering your name (which can be a nickname obviously) and email address.
If you have any problems, questions or feedback about the migration or the new issue tracker, please let us know by emailing us at firstname.lastname@example.org!