If you are using Internet Explorer: https://www.wikihow.com/Turn-Off-the-Pop%E2%80%90Up-Blocker-in-Internet-Explorer

If you are using Google Chrome: https://support.google.com/chrome/answer/95472?co=GENIE.Platform%3DDesktop&hl=en

If you are using Mozilla Firefox: https://support.mozilla.org/en-US/kb/pop-blocker-settings-exceptions-troubleshooting