kk mighties this is what I could find, but you may have already seen it in your manual. good on your kid for trying.. these things are all different and pretty hard to work out sometimes. There is an FM and DAB+ mode, make sure you have selected DAB+.
Mine auto-searches for stations and it looks like yours should too. If it isn’t getting AM, you may not be in their reception area. I dont think all AM stations are on there, but 6PR, ABC and ABC Grandstand (the main ones!) all have digital channels. Actually pretty sure 1080 6IX has one too.
May I ask where abouts you live? If you are anywhere from Mandurah to Yanchep you should get all digital channels without a problem.
This is from the manual:
Changing DAB+ Stations
Press the TUNE+/- button to scroll through the available stations. The stations will
appear on the display.
When the station you require is displayed press the SEL button to select.
Scanning for DAB+ Stations
Due to the nature of DAB+ radio, additional stations and services regularly become
available. If you wish to see if there is any new DAB+ stations introduced in your area,
you can initiate a search by following the below steps:
1) Press the MENU button.
2) Press the TUNE+/- button, until FULL SCAN appears on the display.
3) Press the SEL button to confirm.
Hope this helps, it is a bit hard without seeing the radio though..