DDJ-SX2 : Support ticket #17680 Beat Jump Error

I have a problem using my DDJ-SX2 and Serato DJ which I demonstrate in this video 

https://youtu.be/-u3nUKvGhDQ

Please assist me with this issue. Since raising support ticket 17680 a week ago I have had no contact from Pioneer.

MacOS Sierra 10.12.1

Hardware Overview:

Model Name: MacBook Pro

Model Identifier: MacBookPro10,1

Processor Name: Intel Core i7

Processor Speed: 2.4 GHz

Number of Processors: 1

Total Number of Cores: 4

L2 Cache (per Core): 256 KB

L3 Cache: 6 MB

Memory: 8 GB

Boot ROM Version: MBP101.00EE.B0A

SMC Version (system): 2.3f36

Serial Number (system): C02KDD6SFFT0

Hardware UUID: 0151488B-9A6A-5845-8D9A-0153AE5DCC63

System Software Overview:

System Version: macOS 10.12.1 (16B2555)

Kernel Version: Darwin 16.1.0

Boot Volume: Macintosh HD

Boot Mode: Normal

User Name: Alex Wills (alexwills)

Secure Virtual Memory: Enabled

System Integrity Protection: Enabled

Time since boot: 13:04