@Sbailey factory reset. Give it a go. After that when u change any settings...only one at a time then reboot.

@sirrah in modem mode apparently only 1 port of the hub 3 works.

@wirszews no issues on my ax6000 (uk) manually selected 140 dfs and it stays there. check that zero wait dfs is ticked and i have channel width on 2.4 and 5g as auto. what i have learned is.. only...

@siluram had this a few weeks ago. Rebooted and back to normal.

@phatmonk try a fixed wifi channel on both bands

@Kevin_Z Ok Kevin. The extender took ages to give the note 10 an ip address. Too long to be of any use. Also 2 other devices were without internet at the same time which were very near the extender....