Alexa Mini LF + ARRI Skypanel 120 flicker issue

[Stefano Steno]

Hello everyone,
Having an issue with ARRI SKYPANEL S120 flickering in strobe mode (graded stills attached)

ARRI ALEXA MINI LF
Shooting frame rate: 48 fps 
Project frame rate: 24fps
Shutter Angle: 172.8° (shooting in Europe)
2x ARRI SKYPANEL S120 connected via wireless DMX to an EXALUX Control One triggering Skypanel strobe lighting effect
What could be the issue? We tried changing the Skypanels' Frequency but didn't solve the problem.

Thank you for your help!