First, you can't download Forge because there were too many redirects in the browser, not because you don't have an ad blocker. We recommend not using one anyways since ads are how the volunteers that develop and keep Forge running are able to do so.

Second, try a different browser. If that doesn't work, click show all versions, hover over the information icon next to the installer, and click the direct download button. This should be a last resort, however.