Issues when trying to get RMAD-DRE to utilise Amazons S3 storage - WebException ( unexpected IP details )

Issues when trying to get RMAD-DRE to utilise Amazons S3 storage.

Previously RMAD-DRE has been installed v 10.3.x its saving backups locally on severs on the network and the product seems to work fine. 

Trying now to get the solution to save to AWS S3 , in s3.eu-west-2.amazonaws.com  (within RMAD-DRE GUI -  I select Cloud Storage Select Storage Provider to Amazon S3 Storage - and can then only enter Display Name, Access Key and Secret Key ) I provide the Display Name, Access Key and Secret key -  then after 15 +/- seconds fails to resolve out the Container - and puts up an error ' A WebException with status SendFailure was thrown' 

RMAD-DRE / AWS seems to get IP details returned outside of the expected AWS CIDR ranges ( which is not amendable ) and therefore does not resolve back to RMAD Server. 

Is it possible to define in RMAD the region to use in this case -  s3.eu-west-2.amazonaws.com ( appreciate other users may have a different AWS regions that they are using ), so that the IPs returned are expected and relate to the platform where the S3 is located. 

Is there a setting within RMAD-DRE to limit it to a select region - through the GUI it does not currently seem to allow this.