What the AM is trying to tell you is you should've written

{
package accounts;
use warnings;
use strict;

use WWW::Curl::Easy;
use Data::Dumper;
use XML::DOM;
.
.
.
[download]

since, as written, the OP would have the used modules export into the main namespace, not the accounts namespace as required ... an error about which the strictures would've let you know PDQ.