By default, the platform does not have this option. You can use the following CSS code.
Please follow the steps below:
1. Go to BuddyBoss > Theme Options
2. Under Custom Codes, enable CSS
3. Append the following:
@media screen and (max-width: 767px){ .bb-learndash-banner { display: none; }
@media screen and (max-width: 767px){ .bb-learndash-banner { display: none; }
4. Save changes.