You refer to ‘them’. What is ‘them’? What kind of devices are they?
Regarding NSPanel Pro and Matter support, I recommend reading How to Add and Control Matter Device by NSPanel Pro.
Which firmware version is installed on your NSPanel Pro?
That’s something serious, please submit feedback both on your NSPanel Pro and eWeLink app. And if possible, please add more info on what happened before the reboot in the feedback text box.
Can you tell us more? I see you mentioned Wiz, and how won’t they work with NSPro? Did they go offline?
If you are not on the latest firmware, please do update it, the recent one gets better performance in Matter.
Did you enable the adb/developer mode? I had assumed my problem was related to enabling adb.
Also are any of your non-Sonoff/eWeLink devices a temperature sensor? Even when they work none of mine appear in the option to select one in the settings.