Ensure your setup is up to date.
Then review the setup guides for Studio One.
https://pae-web.presonusmusic.com/downloads/products/pdf/StudioLive_Series_III_Studio_One_DAW_Control_Addendum_EN_V3_25032019.pdf
Studio One Video: https://www.youtube.com/watch/?v=zxfl9j7LdfM
Jul 2019 Updates.
Software Version Information:
Universal Control (Mac/PC) - v3.1.0.53214
UC Surface (iOS/Android) - v3.1.0.53214
QMix-UC (iOS/Android) - v3.0.0.51525
Hardware Version Information:
Series III — v2.1.16232
NSB 16.8 – v1.1.0.15533
NSB 8.8 – v1.1.0.15534
EarMix – v1.1.0.15533
SW5E – v1.0.0.15447
Supported OS Versions:
OS X 10.11.6 (El Capitan) or later
Windows 7 (x64) Service Pack 1 + Platform Update, Windows 8.1 (x64), Windows 10 (x64)
Android 5.1.1 Lollipop or later
iOS 10 or later
