Unable to verify domain with html method

We have uploaded and deployed the file to our domain, but each time I try to verify it, I get an error “can not access the html file, please be sure the file uploaded correctly and retry”

We are trying to submit our application review by the deadline tomorrow and this is the last step to complete. Can someone help me with the manual verification method? And confirm the deadline might be extended in the meantime? Thank you!


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