I worked with your support group for 30 minutes to get to the bottom of this and here's what we determined. When using Text Tags in MS Word, Adobe Sign will not recognize or utilize them when documents are submitted for signature from either Adobe App or Adobe Cloud. In order to get them to work, you must do these two things:

1) Click on your Account, Settings, and then Uncheck "Use the latest version of Request e-signatures" and "Disable form field detection." Doing this on its own did Not solve the problem.

2) From within the Adobe Acrobat App, then View, and "Disable New Acrobat"

Restart the app, and then the text tags will work again both via the app and the cloud.

Please fix this. For any users out there experiencing the same, you're welcome ;-)