Something wrong with domain verification using TXT record

I want to verify my domain in order to publish my app for external users OAuth. I have already added an TXT record in my domain management dashboard. The text appears when I use lookup tool. But when I came back to Zoom app management page to verify, it showed this error message.
Please help me verify my domain

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.