Global tags plugin network activated don't see tag pages

First time to use Global Tag Plugin.
cron is running

1. Installed according to notes and installed post indexer set to index post type = post
2. I have 64 tags on posts in this test.
3. the plugin usage notes indicates a "Tags" page would be created. Not this time. HAd to create the page. Unless I edit the page nothing shows on this page.
4. Tag cloud widgets show tags with link. All the tags and links to tags /tag_base/tag (/tag/amazing) No page for this url .

Did I forge something?
Thank you.