How To Solve Install ACDP APK Error “untrusted enterprise developer” &"Download Fail"

Here is some FAQ about install BMW ACDP MINI tool  APK
Question 1:How to download ACDP APP?
A:Scan the QR code

or learn here :http://blog.obdexpress.co.uk/2018/05/24/yanhua-mini-acdp-software-android-ios-installation/

Question 2:After you install ACDP APK on your IOS device, you may get this error ：Untrusted Enterprise Developer.How to solve?

Solution from OBDexpress.co.uk
please follow the below steps:
Settings--Genaral--Device Management ,and vefified the APK

Question 3:
If prompt:Download Fail,do not exit while downloading,retey? how to do ?

Solution:
When you get this error, please click"YES" ,the APK will download automatically, and do not leave your device in Dormancy mode.