The software to access your AKO 5003 and AKO 5004 can be downloaded here:
It is Windows 10 compatible.
The PDF can be viewed here (hopefully Google will index it sooner or later):
The whole ISO image is here:
(Uploaded them in 7z, they have no password and of course they are just a raw rip of the original old CD disc. I have no clue why AKO decided NOT to share the programs and PDF files online.)
Make sure to use RS232 – aka. serial port to connect to your AKO device. The RS232 converter that AKO gives has a wide-RS232 which can trick you into believing the device needs an LPT port. But, it uses serial. So just get a wide-to-short RS232 cable / converter and it will work just fine, even on Windows 10.