Checking for updates failed

When I try to open the link highlighted in

image following error message is displayed on https://sentinel.esa.int/web/sentinel/toolboxes/snap-engine-kit
.
Does it have something to do with my problem of being unable to update snap?
Secondly when I click on hyperlink in plugins dialog box of snap application it opens with internet explorer which doesn’t supports this URL this may be the reason behind networking problem error. Although my default browser is Google Chrome for http and https protocols . I don’t know why it opens with internet explorer and how to change it to chrome