It should be noted that FullCalendar v4 was recently released and this add-on will be transitioning to it. I will be working on this through the beta process so some things specifically FullCalendar related may still be a little wonky. Most importantly, recurring events are being re-done from the ground up and will hook in better with FullCalendar as there is now native support for them.
The products list can now be filtered by XenForo version (ie XenForo 1.x or XenForo 2.x).
In the future you will be able to download either XenForo 1 or XenForo 2 versions of the same add-on. When XenForo 1.x is no longer supported, the XenForo 1 versions will be removed from the product list but still available for download for licence holders.
As of 21/12/2016, sales and support of my add-ons will now be handled from nixfifty.com. License holders will be able to claim their licenses on the new system here giving them access to their downloads just as before.
We are deeply sorry for the inconvenience this may cause but we feel this will be a productive change in the end.