Please call our toll-free number at 1.833.933.5588, or email us at support@dj-ebikes.com.. We are always ready, willing, and able to talk to our valued customers and answer any and all questions. You will also find a wealth of information on our Knowledge Base (click the Help Center on our website - https://dj-ebikes.freshdesk.com/support/home) in the form of FAQs, blogs, YouTube slide shows, etc.