To enable pop-ups on your browser, follow the directions below.
Safari (Mac):
Open Safari.
Click Safari in the upper-left corner of your screen and select Settings (or Preferences).
Go to the Websites tab.
In the sidebar, click Pop-up Windows.
For the website you're visiting (e.g., portal.io), choose Allow from the dropdown menu.
To allow pop-ups for all websites, set the "When visiting other websites" option to Allow.
Note: In newer versions of Safari, pop-up settings are managed under the Websites tab, not the Security tab.
Chrome:
Open Chrome.
Click the three-dot menu icon in the upper-right corner and select Settings.
Click Privacy and security on the left, then select Site Settings.
Scroll down and click Pop-ups and redirects.
Under "Customized behaviors," click Add next to "Allowed to send pop-ups and use redirects."
Enter https://portal.io and click Add.
Firefox:
Open Firefox.
Click the menu button (three horizontal lines) in the upper-right corner and select Settings.
Select the Privacy & Security panel.
Scroll down to the Permissions section.
Next to "Block pop-up windows," click Exceptions….
In the "Address of website" field, enter https://portal.io and click Allow.
Click Save Changes to apply your settings.