01Step
Start the Firefox browser. Go to the icon with the three bars in the upper right corner. Press on it with the left mouse button. Now a menu opens.
02Step
Now you will see an overview of the menu items. Select the item "Add-ons" (in newer versions of Firefox "Add-ons and themes") and press on it with the left mouse button.
03Step
In the newly opened window, select "Extensions" in the navigation on the left. There you will see all add-ons (extensions) installed for your browser.
Find your adblocker (Adblock Plus, No Adblock, etc.) and press the small blue bar with the white dot to disable it.
04Step
After you have deactivated your adblocker, you should reload your browser.
To do this, either go to the arrow icon at the top left of the address bar or press the "F5" key on your keyboard.