Hey @expres-web,
Thank you for reaching out! We currently don’t support multi-site setups entirely.
You can install SliceWP on a single site of a multi-site, however, network activation will not work. So, you cannot have a single affiliate program for all the sites of your network. You can only have an individual affiliate program for each one of your websites.
As for offering a network wide solution, currently, we’re in the phase of gathering requests. I’m afraid that there are no current plans to develop this functionality, as we have had just a few requests.
Even so, please let me know if you are looking for a network wide setup so that I can add your question as a +1 to our development log.
Thank you and best wishes,
Mihai