Side reach is not working

It been almost 3 month i got the X40 ultra. I have not seen using it side brush out to clean the edges. It just rotates while vaccuming.
There is no hair tangled. AI side reach settings are all turned on.

Odd mine is working , try resetting and updating firmware

Hi,

We require a video to help us troubleshoot the issue. Please contact support.na@dreame.tech for further assistance.

You can provide them with your product serial number, the video of the issue, and your order invoice, and they will assist you with the follow-up process.

We hope your issue can be successfully resolved.