It wont connect to your Hub (and son's) unless is is "activated" onto your account. Call and see if that been done correctly.
Call the equipment activation number on - 0800 953 9500 (option 3) – you may need the Pod serial numbers/MAC addresses off the barcode stickers and also your account number
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired, 1 WiFi, 1 on PA) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On 250Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.