I had exactly the same issue with this dock, it was great until I added monitor 3 then wouldn't play. replaced it now for Alogic and that works with no issues
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MacBook Air 15” M2 Midnight
3x Dell U2723QE 27” 4K
Alogic DX3 Dock
DL 1.10.0 Build 117
Sonoma 14.1.1
My Setup
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