Some users have begun encountering an "Invalid Authenticity Token" or a "refused to connect" error when they attempt to click Sign in on this website (support.syniti.com). In each case, the issue has been resolved by enabling 3rd-party cookies or disabling browser extensions.
Enable 3rd-party cookies: https://support.google.com/accounts/answer/61416?hl=en
Disable browser extensions: https://support.google.com/chrome_webstore/answer/2664769?hl=en
Microsoft Edge (Chromium)
Enable 3rd-party cookies: https://support.apple.com/guide/safari/manage-cookies-and-website-data-sfri11471/14.0/mac/11.0
Disable browser extensions: https://support.apple.com/guide/safari/get-extensions-sfri32508/14.0/mac/11.0