T46G Call Park number not showing

[Dudley78]

I have 3 problems

Firstly when a call was parked it would display the number that the call was parked on example 701 etc. Now when I park a call the number where it is parked does not display.

Secondly how do I set the parked call to flash until it is picked up?

Thirdly if I have a 4 line VOIP account why do I have to set all line numbers to line 1?

Thanks in advance for any takers.