Hope this is an acceptable forum, as the Yahoo categories didn't quite fit this issue.
On two separate Yahoo account setups now (preliminary to setting up local search accounts to two clients) Yahoo won't accept the required mobile phone number.
An error message says the numbers I've provided are not valid mobile phone numbers. I know they are, as the phones have been used for years.
I can't find a similar complaint anywhere, and attempting tech help with Yahoo is like disappearing into the black hole of government bureaucracy.
Has anybody had the same problem?