Can't find S3 bucket using Craft Pro in trial mode I am using the Craft Pro trial version and I want to use S3 for my Assets.  However, I enter my credentials but the refresh button does not show my bucket.  Also, when I try the refresh with wrong credentials it shows the error message but with correct it just doesn't show anything. I tried to connect to by bucket with other tools and was successful so this is why am thinking that is a restriction on the trial version of Pro.

So is it a Craft trial issue? Are you allowed to connect to S3 in trial version of Craft Pro?
The bucket you're trying to list is probably in the Frankfurt S3 region. The 3rd party library used in Craft 2.x for Amazon S3 support does not support Signature Version 4 that Frankfurt region requires, so you won't be able to use buckets in that region, as outlined in this answer

Craft 3.0 will not have this limitation, however.