| When you're recording the greeting, the first thing it says is "please enter a selector code from 1 to 9, or if finished press *#" - this is where you set up when you press a single digit, it transfers to a specific extesion. But the Selector Codes that match the 1st digit of your extensions must be set to "Direct Extension Transfer", so it knows to wait for the 2nd digit and then transfer there.
You probably accidently erased your selector code No. 1 when you redid the greeting, disabling it so you can't transfer to extensions from 10 to 19
Log back in, go to modify the menu, press 1 and see if it is disabled. If so, press 9 to change, and 5 for Direct Extension Transfer. Then *# because you don't want to change any other codes, and # again to keep the recording you already made |