In order to print your JAMB Exam Slip you need to make sure that pop-up is allowed on your browser, here is to go about on Chrome or Firefox.

How to Allow Pop-ups on Chrome (Windows/OS X)
1. Open Chrome, then go to the web page that you want to allow pop-ups.

2. In Chrome’s URL window, highlight the entire web address of the current page, then choose the Copy command from the Edit menu or right-click and choose the Copy command.

3. Click the icon with three horizontal bars in the upper right side of the browser toolbar.

4. Click Settings.

5. Scroll to the bottom of the Settings section and click Show advanced settings… .

6.In the Privacy section, click Content settings… . The Content settings window appears.

7.Scroll to the Pop-ups section, and then ensure the Do not allow any site to show pop-ups radio button is selected.

8. Click Manage exceptions… .

9. In the Hostname pattern field, choose the Paste command from the Edit menu or right-click and choose the Paste command, and ensure the Behavior dropdown menu is set to Allow.Notes: Pasting the web address of a page you wish to allow pop-ups is recommended, rather than typing the generic main web address. For example, you might visit www.example.com/requirepopup.html, but the page is actually hosted at popup.example.com/forms/popupform.html. In this example, you must allow popup.example.com, not www.example.com. Note also that entire websites must be allowed, not individual directories or pages, so in this example Chrome will automatically add the top level popup.example.com to its Allowed sites.

10. Click Done.

11.Close any remaining dialog boxes.


How to Allow Pop-ups on Firefox (Windows/OS X)
1. Open Firefox, then go to the web page that you want to allow pop-ups.

2. In Firefox’s URL window, highlight the entire web address of the current page, then choose the Copy command from the Edit menu or right-click and choose the Copy command.

3.Click the icon with three horizontal bars in the upper right side of the browser toolbar.

4.Select Options (Windows) or Preferences (OS X).

5.In the left sidebar, click on the Content icon to display the Content section.

6. In the Pop-ups section, ensure the Block pop-up windows checkbox is selected, then click the adjacent Exceptions... button.

7.In the Address of web site: field, choose the Paste command from the Edit menu or right-click and choose the Paste command, and then click Allow.Notes: Pasting the web address of a page you wish to allow pop-ups is recommended, rather than typing the generic main web address. For example, you might visit www.example.com/requirepopup.html, but the page is actually hosted at popup.example.com/forms/popupform.html. In this example, you must allow popup.example.com, not www.example.com. Note also that entire websites must be allowed, not individual directories or pages, so in this example Firefox will automatically add the top level popup.example.com to its Allowed sites.

8.Click Save Changes.

9.Close any remaining dialog boxes.

Source: https://how-to.ng/3918-allow-pop-ups-browser/