I have a trial of Splunk Cloud and installed the Splunk Add-on for Amazon Web Services. When I try to configure, it says I must download the Splunk Add-on for Amazon Web Services in the app marketplace.
However, when I search for Splunk Add-on for AWS, there is no add-on.
This was previously asked and fixed in this answer: https://answers.splunk.com/answers/390655/why-do-i-not-see-the-splunk-add-on-for-amazon-web.html?utm...
But I am having the same issue.
The reason is very similar to the other answer you linked to. Your Splunk Cloud trial is running version 6.5, and this add-on's latest version is not yet supported on Splunk platform 6.5.
We'll update this thread with news once that changes. Thanks for your patience.