trouble with Amazon s3 on plesk

Question

I am using plesk to back up to S3

I've configured the back up and it works on some sites but on others fails for no apparent reason. The user permission scripts seem to be the same apart from the storage locations so this one works:

{
  "Statement": [
    {
      "Effect": "Allow",
      "NotAction": [
        "s3:CreateBucket",
        "s3:DeleteBucket"
      ],
      "Resource": "arn:aws:s3:::thechurch.org.uk",
      "Condition": {}
    },
    {
      "Effect": "Allow",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::thechurch.org.uk/*",
      "Condition": {}
    },
    {
      "Effect": "Allow",
      "Action": "s3:ListAllMyBuckets",
      "Resource": "*",
      "Condition": {}
    }
  ]
}

but this one doesn't:

{
  "Statement": [
    {
      "Effect": "Allow",
      "NotAction": [
        "s3:CreateBucket",
        "s3:DeleteBucket"
      ],
      "Resource": "arn:aws:s3:::thechurchtwo.com",
      "Condition": {}
    },
    {
      "Effect": "Allow",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::thechurchtwo.com/*",
      "Condition": {}
    },
    {
      "Effect": "Allow",
      "Action": "s3:ListAllMyBuckets",
      "Resource": "*",
      "Condition": {}
    }
  ]
}

plesk throws

Error: Error executing "CreateBucket" on "https://s3.eu-west-2.amazonaws.com/churchtwo"; AWS HTTP error: Client error: PUT https://s3.eu-west-2.amazonaws.com/churchtwo resulted in a 403 Forbidden response:

AccessDeniedAccess DeniedXXXXXX (truncated...) AccessDenied (client): Access Denied - AccessDeniedAccess DeniedXXXXXXXXXXXXXX

I have made it work a few time but it seems to be luck. Is there something about S3 that blocks a connection on a timeout or is my config wrong.

Any thoughts help would be great!