Please check that the region currently selected on the Adobe.com page is same as that being set for your Adobe ID.
You may visit the Presenter 11 product page - http://www.adobe.com/products/presenter.html and then scroll to the bottom of the page and click "Change Region".
Now select the region same as the one which you have mentioned while creating your Adobe ID. Once done, it would refresh the page and then you may click on the "Buy Now" button at the top-right side of the page to proceed to the section where you may select the license type and add the product to your cart.
Thanks for answering to my inquire. I already did so several times and I
keep getting the same error message:
Error in Your OrderThe account was registered for a different country.
Please sign out and sign in using an existing account for this country.
In my profile I have my country but in the lower corner it only appears
Latinamerica as region, so they will never be coincident.
2015-11-23 12:10 GMT-05:00 Sharad Vatsa <email@example.com>:
Can not buy presenter 11 subscription created by Sharad Vatsa
<https://forums.adobe.com/people/Sharad+Vatsa> in Adobe Presenter - View
the full discussion <https://forums.adobe.com/message/8207400#8207400>