I also own a Lorier Neptune V2 (same batch as yours, I received it last Wednesday), however, I do not have any of the mechanical issues you mentioned: my crown does rotate on a perfect straight axis, and does not change the time while extracting it. I am pretty sure they will offer to a) service your watch and fix the issue, or b) replace your unit with a fully functional one. I reached out to them for some questions before buying the watch, and I received a reply directly from the founder Lorenzo within one or two days, so I am sure they will help you out.
Moreover, I have to report a nice plus on this watch: I measured the accuracy on a daily basis, and so far I am averaging +1 second per day, which is pretty awesome at this price point.
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