UR 242 - TOO LOW OUTPUT SIGNAL ON MONITORS

hELLO
I have just purchased a UR242 USB audio interface. Using it on Windows 10, and with YAMAHA HS50M sound Monitors.
Problem is On the monitörs i have almost no sound Volume. But i can listen it normally if i connect my Studio headphones.
I tried to change the settings on dsp Mix FX, such as sample rates, buffer sizes etc. but i still have no sound on my studio monitors.
I have connected them with XLR-TRS type balanced cables to the interface sitill almos no sound …
I have changed the cable to only TRS no sound.

What would be the problem ?

Thank you
Emre