EASunlock and a tape measure are more than adequate to set the suspension with. I have more than likely had a Nanocom longer than any one on here, but have never used it for EAS setting. So cannot help a lot with this. I suggest the OP goes to the Nanocom site and uses the Emulator, it may help him to understand the various functions. The stored settings could be the system defaults stored in the ECU which are reverted to if a max or minimum permitted parameter on any height is exceeded. They normally are not changeable however Nanocom may have this function. I would suggest noting any settings before changing anything.
https://www.nanocom-diagnostics.com/