Thanks! It seems you are using Azure DevOps, Notification [https://learn.microsoft.com/en-us/azure/devops/notifications/at-mentions?view=azure-devops]
Check this similar issue here, https://developercommunity.visualstudio.com/t/do-not-come/925823
Also currently only these (Azure community support | Microsoft Learn) tags are supported in Microsoft Q&A forum
For Azure DevOps suggest you ask your query on Developer community : https://developercommunity.visualstudio.com/search?space=21
If response provided was helpful, please do mark the post which was helpful by clicking on ‘Accept Answer’ & ‘Up-Vote’ to benefit the community find the right answers.