g1562388 said:

I have made 2 referral exchange offers that I have later cancelled (I realized they were duplicates.) After cancelling the offers the referrals disappear and I can not offer them in another exchange. Is this the way it is supposed to work? If so why is there no indication of this anywhere, i.e. in the field manual, in the logistics exchange, etc.?

It definitely shouldn't work that way. Please inform our Support Team of this issue: https://plariumsupport.zendesk.com/hc/en-us/requests/new. And please check if someone has already accepted your offers.