Occasionally customers have reported a "refused to connect" error when trying to access our RMail/Rsign Support Center or RPost Investor Relations portal.
Because the RPsot Support Center uses a host-mapped website, The error
rpost.zendesk.com refused to connect
comes from privacy settings blocking third-party cookies. The disagreement between the page and the cookie is something that can be blocked within the browser directly, as documented in this support article or by ad-blockers or privacy-related extensions.
To solve this issue, make sure your browser allows third-party cookies.
Find the instructions allow third-party cookies in Chrome in this article from Google Chrome Help: Clear, enable, and manage cookies in Chrome.
If your browser has ad-blockers, turn them off to see if this allows you to sign in.