Can you confirm on the following:
- If all the setup is in place please apply below logger set at the DEBUG level and provide the log file along with the AEM error.log file.
com.day.cq.analytics.testandtarget.
- Check and confirm if activity syncs as expected to the Default workspace. This is required so that we can segregate if the issue is occurring only with custom workspace or an issue with Default as well.
Please note that the sync to custom workspace is only supported for Experience Fragments as of now. All other activities created in AEM (A/B test etc.) are only synced to default workspace, use of custom workspace is not supported in this scenario as of now.