As you are aware, since Shadowlands was released, we have encountered issues with the Challenges (like no other time in WoW Challenges history), and specifically the tracking of them.
Unfortunately another issue with gear tracking has emerged, so we have had to disable the Add Toon button. This is effective immediately.
So until we can get this issue fixed there will be no adding toons for any Challenge on the website, which means no official celebration of max level toons until we can get proper data verification.
We will let you know when all has been sorted.
We sincerely apologize for the inconvenience and want to thank all who participate regularly in the challenges for your support and understanding.
– WoW Challenges Admin