Can I change my email address associated with my Bithumb Singapore account? Where is the verification email? How can I cancel Bithumb Singapore account? The identity authentication rejected. What is the identity authentication photo? Is using Bithumb Singapore impossible as a U.S. citizen or a current resident? To comply with international standards, Users from some countries might be unable to register How to sign up with Bithumb Singapore? How do I change Password? I forgot my Password. Verification SMS message is not coming. What is the identity authentication? I’m underage. Can I register and trade? Can I change my phone number? What is the Level? How many levels are there?