Porting number from Sky SoGEA to Plusnet (number invalid)

[#1]

Hi mod,

I actually intended to create two threads:

1) Separating out my phone number to a VoIP provider (original topic)

2) Porting my number to Plusnet from Sky SoGEA connection

Hence, I don't consider these the same topic ;).

[#2]

Happily my Sky broadband and SoGEA phone number migrated over to Plusnet broadband and regular analogue phone line today. I lost phone service for a couple of hours, and internet service for ~4 hours, but all seems to be working fine since then, except CLI.

I checked the dashboard, it says caller ID is 'active'. Any thoughts on what might be going wrong?