How can I edit or remove the announcement bar on my site?

We have an announcement bar at the top of our site which we put up at the beginning of the year, we now need to change the text and the attached link but upon entering out sites customisation we cannot find anywhere to edit/remove the bar.

It’s odd as this was definitely a feature we could use not even 3 months ago but we have searched through all the theme settings and cannot find anywhere. For reference we have the Blockshop theme.

Hi, Thank you for this.

We have since discovered we were using an external app to have an announcement bar.

Just to confirm that this option you suggested was not available on this theme. But appreciate your help!