This has happened to me today, as I switched on Callsafe and added 25 numbers to the Approved list. When trying to edit or display an approved number, it said that the phone number is a withheld number and doesn't display it, so I can't edit it. I know for a fact that some of these numbers have definitely not been withheld by the owner of that number.
Also, every time I added a number to the approved list, this message appeared:
We are unable to carry out this action due to a technical issue. Please try again or contact us.
In spite of this, though, each new number was added!.
Any idea what is going on please?
I raised this with TalkTalk a while ago and was told that it was an issue with "MyAccount" that they were aware of but couldn't give a resolution date.
If you enter a number via 1472 on your phone it shows correctly in MyAccount and you can then add a name to it. Bit of a pain I know but better than nothing.