This may be due to a system caching issue. First, check that the URL in the PageBuilder is correct and that the PageWrapper is pulling in the right PageBuilder page. If all the coding appears correct, copy and then publish a new version of the PageBuilder Page:
  1. Select Content > PageBuilder
  2. Enter the name of the page and click Search
  3. Click Manage under the Actions column
  4. Click Copy Version under the Actions column beside the Active version
  5. Enter a Version Name
  6. Click Finish
  7. Click Next
  8. Click Next
  9. On the last step, Approve & Publish, click Publish Now
In publishing a new copy of the version of the PageBuilder page, this clears the system cache on the content. Now when navigating to the front end, the URL should refresh and point the user to the correct page.