First Laser - SurvivalLaser Help

Ive finally got around to 'building' my first laser, basically just putting the parts together, however i cant seem to get it to work.

All parts were purchased from survival lasers (not the battery) with links below.

Survival Laser V 405nm Diode & Driver Module

DIY C6 Host Assembly

using a TB-18650ic35 battery.

Any help would be much appreciated