Yes I see the ? in your pull down notification shade next to android system notification.
What happens if you elect to clear the notification ? i.e does it return ?
Does it show regularly ?
What happens if you tap on it ?
Are you directed to anything ?
It's good that the phone is connecting ok but I appreciate your not wanting this popping up.
Looking at the hits from a Google Search there are quite a few threads with tips and advice in.
Your not alone with this it seems.
One is Here.
🌈 Stay Safe & Stay Alert. 🌈
My advice comes from being a UK Samsung Phone Owner.
I have no affiliation with Samsung.
Current Phone ~
Samsung Note 10 Plus 5G _256Gb >_ Samsung One Ui 2.5/ Android 10.