Why can't my identity be verified online?

Why is it that I am unable to verify my identity online? Have I missed some crucial steps or provided incorrect information? Could it be an issue with the verification system itself? Is there a specific format or type of document that I need to submit? Am I not meeting the eligibility criteria for online verification? Has my identity been flagged for some reason, preventing the verification process? Could it be a technical glitch or network issue preventing the verification from proceeding? What should I do to resolve this issue and successfully complete the online verification process?