Great Vault Progress lost

I have done my timewalking for this week I log back in and all progress has been lost. Has anyone had this happen before?

Do you have any other vault rewards pending from prior weeks?

Thanks, No I did but I have collected previous rewards since. I currently have two characters that have lost great vault progress and my other characters look unaffected. I know I have completed my 5 timewalking dungeons because I have the quest “The Unstable Prism” to turn in the warp prism to dalaran. As well as the quest to do the 5 timewalking dungeons is gone.