The Weeknd Barcelona Concert Tickets from StubHub Were Canceled Without Explanation

I received an email stating that my tickets for The Weeknd's concert in Barcelona on July 20, 2023 (order number 510569700), purchased from StubHub, have been canceled. The email did not provide a reason for the cancellation or inform me when I will receive a refund. I need this issue resolved as soon as possible so I can purchase new tickets without encountering another cancellation problem.