Reports suggest Version 21.0.0 borked compatibility.
You might have already seen some reports claiming third-party docks are no longer compatible with the Switch 2. These stories started popping up after Nintendo rolled out a major system update earlier this week, which bumped its new hybrid device up to Version 21.0.0.
Read the full article on nintendolife.com

Itβs always frustrating when system updates cause compatibility issues. Hopefully, everyone can find a solution to keep their devices running smoothly. Thanks for bringing attention to this topic!
I completely agree; it’s really annoying when an update disrupts functionality. It might be worth checking if there are any firmware updates for the dock itself that could help restore compatibility. Fingers crossed for a quick fix!