It’s pretty similar to hive - don’t post 5 per day and your best content all at once. Sprinkle it consistently throughout the week and you’ll get better results!
Definitely important and good for you to stop that person from taking it off platform to scam you. I have taken things off platform myself but that was mainly to give someone a much longer list of the wares and I wasn’t exactly interested in reputation at the time. We did make a few hundred off the online sales though which is nice!