If you've used a "proper" GUI such as you get from Yaskawa, the Lichuan "software" seems pretty underwhelming. I've only use the Lichuan servo products but the stepper screenshot looks fairly similar. If so, then you download the parameters into the "GUI"(?) which is little more than a display table, change the parameters you want to change and then save it back ("write parameter"?). If that's what you were doing and still no cigar, then I've no idea what the problem is.

Presumably Jazz is your man for expert Lichuan questions here.