Ruckus goes on and off all the time after connect directly to fiber ONT

[Chh]

recently we have switched to fiber internet

after we connect Ruckus directly to the ONT, the internet goes on and off all the time.

is there any setting change that is needed for direct connection to ONT?

[Chh]

sure. will upload the image. right now in order to prevent the on and off, I added an old modem between the Ruckus and ONT and that helps to make the internet stable. However, i really want to make it work by connecting Ruckus directly to the ONT. 

so for the image you'd like to check, should I remove the modem?