WorkDocs Content Search not Working Properly

I created a new WorkDocs account and uploaded my folders and files.

I am having difficulty with the search tool. It does not work for the files that were migrated/uploaded to the account. It only works for the new files created in the WorkDocs Drive. It seems that the uploaded files were not indexed.

I tried searching on the web client and with the WorkDocs Drive option.

In the admin console Indexing of content for search is enabled.

I am either not able to index the WorkDocs Drive with the Windows tool.

Please, any help is very welcome.