Ongoing Notifications Despite Project Departure

I’m reaching out regarding a persistent issue with notifications on pipelines from a sub-project I recently left.

In detail, I had activated notifications for the sub-project’s pipelines when I was a part of it. After leaving the main project, I continue to receive email notifications for actions such as pushes to master and pipeline results (success or failure). Unfortunately, attempting to unsubscribe from these notifications results in a 404 error, likely due to my departure from the project.

Is there any other way than putting these emails into my spam directory ?
Thank you