"We've put a lot of time into getting the migration process right" message

Hello,

Since upgrading to the latest version of UpFront, all the users in my network receive the "We've put a lot of time into getting the migration process right..." message when they try to edit the website. Still, in my network, the admins don't have access to plugins and they can't activate plugins. So, unfortunately, this message is not helping but confusing the users.
Also, for those using the AdBlock extension on their browser, the message doesn't show at all. So they can't see the "Proceed to edit button" and don't have access to the editing features of UpFront.

Is there a way I can get rid of this message?
Thank you