The connect App is not essential but if you cant log in to the Hub settings you will be stymied,
They wont know the password either. You will need a replacement Hub. Try calling in early (08.00 Mon-Sat, 09.00 Sun).
Note that they have been experiencing technical problems on phone connections this week though
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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 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.