Need help in verifying domain for seismic zoom app

We have app created in marketplace name as "Seismic". On Sept 21st we changed subscription notification URL and added new scope in app. But when i try to publish I get the step to verify my domain. Could you please help?

Hi @mahesh.shirole , moving to App Marketplace so they can help with manual domain verification.

Hello,

Thank you for reaching out in relation to Our Domain Validation process, the next steps will be sent to you via DM. Please refer to our domain validation resource: Domain Validation Explanation for any further questions you may have about the process.

Thank you.