[Koha] EBSCO EDS Plugin Problem

Hi all, We have installed EBSCO EDS Plugin version (3.1636) on koha 3.18.06 bootstrap interface, And configured it, And EDS folder permissions at least (755), But the discovery search doesn't appear in OPAC interface although we have an account and our information has been updated successfully, Also when opening Run tool <http://arkoha.maktabat-online.net:8080/cgi-bin/koha/plugins/run.pl?class=Koha::Plugin::EDS&method=tool> from plugins page it prompts the page to be downloaded or opened by a selected program and doesn't run Setup tool. If there are any suggestions ill be grateful. Thanks.