AeroPod, PowerPod and Newton

OK, here goes...
I received my new PowerPod and have not been able to successfully pair it to any of my ANT+ speed sensors. I've tried now on 3 bikes, 2 with the Garmin wireless speed sensor and 1 with the GSC10 magnetic speed/cadence sensor. On each occasion, I am certain I have woken the device (I get confirmation on the Garmin Head Unit, an Edge 810) showing speed and cadence while I spin the wheels/pedals. I press and hold the PowerPod button to show flashing green. The unit flashes 5 times and then show steady red. I've watched a few Youtube videos that show the flashing for 10 - 15 seconds and have read blogs indicating that it may take 20 seconds to pair, but my unit only flashes 4 or 5 times and then immediately red.
Powered is fully charged, mounted with the combo TT mount supplied with my unit.
I've had no joy doing a factory re-set (using the Isaac software) or a hard reset (holding the power button for 15 seconds). I've cleared any profiles I loaded.
Now I'm unsure where to go from here...

Sorry to hear about your situation; it's frustrating when this kind of thing happens.

Please do the following:

0) Fully charge your PowerPod. Its light will flash red when you connect it to a USB charger, then the light will go out after fully charged.

1) Disconnect PP from the USB cable, then press-hold the PP button continuously for about 10 seconds (the light will start flashing), until its light goes out temporarily, then turns back on. This does a hard reset of the PP.

2) Take one of your bikes, preferably one of the bikes with a magnet-less speed sensor mounted on the front hub, and spin its wheel, to confirm on your Garmin that speed is being registered and that the sensor is working

3) Click the PP button to wake it up. It should show solid red. If your PP shows any other color or flashing, then contact technicalsupport@velocomp.com for support.

4) If it shows solid red, then press-hold the button for about 4 seconds, until it starts flashing green (pairing process initiated). Release the button

5) The light will flash green while pairing, then turn solid green when pairing is successful

If the above process does not work for you, contact technicalsupport@velocomp.com for next steps.

I've just sent an email to technical support.
I look forward to a successful outcome so I can get out and start riding with power!