Gao was supposed to appear in a Hong Kong court yesterday but had appeared a month ago, and Mr Loper was still waiting to be advised the outcome of that appearance.
"We're just waiting on something to happen but we're not sure what, at this stage, until they get back to us,'' he said.
"We haven't got a date for an appearance or anything.''
Dealing with Chinese authorities had been "challenging'' but not difficult, Mr Loper said.
"They have their processes just like we have ours.
"We're just not used to their processes, that's all.''
Kara Hurring, 32, Gao's partner when he fled New Zealand, was arrested on related charges when she re-entered New Zealand earlier this year and is due to stand trial in February.