Just a quick note from us here on the VPN Tracker engineering team to let you know that we've been testing VPN Tracker 365 with the new OS X 10.11.4 update and everything works great.
As always, we recommend you use the latest VPN Tracker update and always keep your version of OS X up-to-date as well, as Apple usually fixes quite a few security holes with each update.
Download the latest version of VPN Tracker 365.
If you're just updating to OS X El Capitan, you can try out VPN Tracker 365 free for 30 days.