Zendure I'm sorry, your problem is when you charge via USB-C port 2 for your iPad Pro, it doesn't work? Have you tried via USB-C 1 or USB-C3/4? Doesn't work either? Could you offer the SN number of the device?
mur It works ok on USBC Port 1, 3 and 4. Only port 2 is not working for iPad Pro (but works fine to charge a MacBook
support Please don't worry, you could write an email to us. So that we can help you better to solve the problem.