Can't Remove The Red "B" Bubble From The Screen Of My Mobile vivo Y51. Any Help?

edited February 11 in Mobile Security

As you can see on the screenshot, I have this red bubble (with B) on my screen on my vivo Y51 (android 12).

Despite following the suggestions from bitdefender support team (deactivated bubbles in the settings of the phone) it doesn't disappear.

Can anyone help please? Thanks.