Uber and Apple Maps iOS Integration

Making a update in order to correct some misspells and new infos:

Since ever (iOS 10, when this function was released) I can't call (or even get price of) an Uber directly by Apple Maps.

First I thought it was a privacy problem, and reset everything, with no results.

Then I waited iOS11 release to clean and restore my phone, without push a backup and setted up as a new device. But even then I could not get this infos

I still have got the message "There is no uber car available now" (as seen at screen attached)

All other options (Car, Walking and Public Transportation) works fine.

The awkward is: with google maps I can do that.

The awkward 2 is: Other apps (like cabify or 99) doesn't show at maps (attached)

There is anyone with same problem? Any clue how can I solve that?

Thanks in advanced