I think you might have installed addon/extension of adblock which is good and an awesome extension.But some sites have scripts which can detect the adblock.So you need to find the extension(if you have) as in picture below and click the drop down near the icon and click disable "the page url" and reload the website. Hope this helps If you feel it solved the problem choose this solved my problem.

There is no picture attached to your post and I can find no extensions or plugins for adblock either.

For me the Adblock icon appears in the top-right corner next to the 'hamburger' options icon. Do you not see this? Have you tried looking in the 'customise' section of the options menu.