Hope you are well.
The issue is likely Test Complete related rather than Test Complete.
In order to scale web tests from Test Complete to CBT you need to have a test that uses XPath expressions and CSS selectors.
These will be referenced to your mapped controls in your namemapping.
You can enable this mode when creating a new project or by changing a project setting
Open the Properties > Open Applications > Web Testing page of your project and make sure that your project is configured to use XPath expressions and CSS selectors to locate web objects.
Once its enabled if you record a test it will map the controls for you using xpath/css selectors and then you can run your scalale tests.
See here for more information
https://support.smartbear.com/testcomplete/docs/app-testing/web/cross-platform/index.html
KR
Vincent
