Yes! Great job, this means you should be connected now.
The flashing light (which can be green, amber or red) tells you the KOBA Rider is now activated and connected to the car. It should occasionally flash when it's plugged in.
If you notice it has stopped flashing, first check the App to see if your most recent trip has been recorded. If it has, don't worry about doing anything further. If it wasn't, wait until you are parked; ignition off + handbrake on. Then, unplug you KOBA Rider for 10 seconds and plug it back in. If you still find that the trips aren't syncing properly, please get in touch and we can send you a replacement Rider to make sure you're paying what you should.