[perhaps the outsiders are the reason there is no trading, possibly being used by the imperials to bottleneck trade for some reason.
this is a long shot but the imps have done things like this before to slip under the eyes of the senate and oppress a whole planet without their knowledge.
Imperial 'unofficial' tactics are by what mainly the empire is made from.
If the Imperials squeeze both import and export then they can effectively ensure that Lanzar is incapable of mounting a resistance due to the lack of supplies.]
"Could it 'ave somfin' to do with all'a these diplomat-watzits, i think the imps 'ave some kinda' prescence on dis planet" U'Ya said in reply, keeping her volume in check, "it like dat planet, Naboo! i read once that the old an' cold trade federation squeezed the planet to reduce resistance before their assault, could be the same tactics used 'ere by those 'travellers' so to speak!"
"Dont 'ate me for mentioning this, but what is reckon is that 'dese Imps awlreddy got a few merc or bounty 'unters workin da planet, possibly even spies in advance of the landing" She stopped and quickly glanced around to make sure no-one was in earshot, "Some of 'dese so-called travellers or any other non-Osokan could be one of them, could be all of 'em!"
"All im sayin' is this; lets not ever be seen in public as a group, it will on'y attract attention, an' we couldn't do wiv alotta that!" She finished, making sure that they weren't being watched before splitting from the group.