If the S3 server is not responding then the save credentials button does not allow the dialogue box to be closed. This is a good check that the endpoint URL is correct. However if you know it's correct but the server is down then allow the credentials to be saved.
If the S3 server is not responding then the save credentials button does not allow the dialogue box to be closed. This is a good check that the endpoint URL is correct. However if you know it's correct but the server is down then allow the credentials to be saved.