I've been using my old TOZO T5's on my Windows 11 Dell 2 in 1 laptop since I got it. No problems ever.
Having a pair of TOZO T10's and T12's on my Samsung phone (I keep one at home and one at the office) I recently bought another TOZO T12 for the laptop as well so I can upgrade from the T5 to the lower profile T10/T12 design.
Now with the T12 I get no sound even though it installed fine and the settings are correct.
As I was typing this up I just grabbed my T10's sitting here from my Samsing S21 and paired them to my laptop and the sound works no problem with those.
Dunno what is different about the T12's and T6's from the T5 and T10's but it seems that some work with Windows 11 and some don't.
Since I was just trying to upgrade form the over the earlobe T5 to the lower profile T12 on the laptop, I suppose using the T10 on my laptop and switching my new T12's over to my Samsung S21 will work for me.