the 6 digit access number not being sent to my mobiile

[dandydog]

on the yahoo emails the 6 digit code is not being sentb to my mobile

[Mark39]

You mean the 2 step Verification code?

There doesn't appear to be a general problem as yours is the only post reporting it. You could use your Recovery Code to turn off 2 step login. If you didn't make a separate note of it, as Sky recommended,, you'll have to call.

[Roy521]

Having  the same problem this morning no 6 digit code being sent