I am not able to verify domain using html , can you please help me to validate domain manually

I am not able to verify domain using html , can you please help me to validate domain manually.
I almost completed all steps for my oauth app to publish on production environment. now this is last step, can you please help me to manually validate my domain , its urgent

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.