Thanks for the additional info @bainese !   This may require some additional troubleshooting by Meraki Support to verify some things on the Meraki end.   I'll be DMing you shortly to help get that rolling, so keep an eye out.     ... View more

API for the MTs is currently in Beta.  You can contact Meraki Support to enable it on your Organization.   Once it's enabled, you should be able to see the endpoints under Help > API Docs. ... View more