Did you file return this year? manually or electronically. If done manually and have stamped receipt, check your efile account. If not create one and submit the return electronically and your name will appear within two weeks in Active Tax Payers list.
Same happened to me and my car was to be delivered in March and due to this glitch it has not been delivered till today, hopefully this week because it left Karachi on 18th April.
I refiled the electronic return and my name which went missing on the time of invoice, again appeared.