Category difference between registration and match

Sorry for my English, I’m French
We use Practiscore for long range shooting match for PRS match.
Last match we did, we have a shooter who say register in category “factory” and he appear in category “open”.
How is it possible ?
Thanks for your help

IF the match has started then the only way to modify a shooter is to change his division in one of the scoring tablets or the master tablet.
If he truly belongs in the factory division and the match is complete and posted, then you just need to correct him in the master scoring tablet and repost the results.

Thanks for you help, !!!