How to verify bitFlyer?

How can one effectively verify their account on bitFlyer, the popular cryptocurrency exchange platform? What are the necessary steps and documents required for this process? Are there any specific security measures in place to ensure the safety and legitimacy of the verification procedure? How long does the verification process typically take, and are there any potential delays that one should be aware of? Is there a customer support team available to assist with any issues or questions that may arise during the verification process?