This page is for customers on eBay/Amazon/Aliexpress etc.  of F-wheel distributors/wholesalers/agents.

We’ll help you to notify the direct seller to solve the problem ASAP.

DYU D1 Smart Bike Function and Breif User Guide – APP Download/ Bluetooth Connection/ Password/ Cruise Mode Setting Etc.


Name: John

Email: [email protected]


Order number: 12345678

Message: I can’t use the APP.

Please follow above example or we’ll have problem getting in touch with the direct seller for you.

Then email above information to [email protected]

Details Page: After Sales Service