Unable to pair my hub. How do I resolve?

Issue:  Unable to pair hub via bluetooth.

What this means:  Customer cannot pair over Bluetooth please use follow actions below to attempt to solve the issue

Action: 

• Ensure you have entered the correct Bluetooth pairing pin (this is the Pin code you used when verifying the hub GDID and pin)
• Switch off Bluetooth on your phone / tablet and then switch it back on again then try again
• Delete any previous bond to the hub in your Bluetooth settings and try again:
  1. Open the settings app
  2. Open Bluetooth 
  3. Remove / unpair any device with the name starting GWXXXX<Dimplex>
  4. Return to Dimplex Control app and try again
• Restart your phone / tablet and Dimplex Hub and try again
• Clear Bluetooth cache (Android only) 
  1. Open settings -> Apps -> Show system apps -> Bluetooth -> Clear Data / Clear Cache
  2. Return to Dimplex Control app and try again