If the signal bars are white in colour, the unit is ready to use. If they're orange, there's a problem with the service.
Check there's power to the Boostbox and the ethernet cable is plugged in. Try replacing the ethernet cable.
If you've switched Broadband provider, changed your router or replaced a SIM card in a phone linked to the Boostbox, adjustments will be required to your Boostbox set up.
If you've moved the location of the Boostbox, we will need to make adjustments to your Boostbox set up.
If the fault diagnosis above fails to rectify the problem, contact your account managers. Alternatively, call our customer service team on 03300 881818 or email full detail to firstname.lastname@example.org