Just finished a war zone match and the game glitched. When it reset old lost all my accumulated req points. 
Thanks for the report! We’re aware of this and investigating.
You can continue to check on the status of all Halo 5: Guardians services: aka.ms/H5Status
Please use this thread if you have any further reports: https://www.halowaypoint.com/en-us/forums/e0d9938206f04a598ce84f2c8cadce02/topics/my-multiplayer-progress-has-been-reset/9e8d9526-84e8-40d3-b699-f4bd5857f320/posts
We apologize for the inconvenience.