always receiving access denied creating/upload item to AWS s3

HI,

have this connected to my test AWS S3 bucket. bucket appears to be working fine as the rest of the app is able to upload/download items from the folders.

i keep getting an access denied trying to perform any write operations, I am able to browse the files.

i've checked various flags:

readonly: false

i tried setting:
$config['aclPolicy'] = \RFM\Repository\S3\StorageHelper::ACL_PUBLIC_READ_WRITE;
defaultAcl' => \RFM\Repository\S3\StorageHelper::ACL_PUBLIC_READ_WRITE

with no luck.

am I missing something