It's not always good to use the "latest & greatest"... You can do two things:
1) Submit a Support Ticket on Monday. PreSonus is having weekend and holidays, so contact Support on Monday (Irish time).
2) Ask your question in this special closed/private Facebook group:
PreSonus RM mixer Owners And Enthusiasts
https://www.facebook.com/groups/469453379887309
or this one:
Presonus StudioLive Mixer Users
https://www.facebook.com/groups/236075319847351