These are used for features such as the Recruit-a-Friend and other features in the future, they're required.
Important Note: There is two addons included in the file archive called 'Firestorm' and 'GMTickets' they will have to stay permanently activated in order to make requests in-game. If you're reinstalling your game, you may want to back up your addons configurations, macros, etc. You will be given several ways to update your game to the latest version, and we recommend you download the full game before joining the server (Ref: Method #1).
It's coming to the end of the Public Test Realm (7.3.5), which announces the official release of patch 7.3.5 exclusively on Firestorm on Monday, May 7th, 2018! We have received a lot of feedback from you, and we appreciate you for it! Your feedback helped us expedite the progress on development and corrected the problems you've encountered during the test.