If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (e.g. Adblock Plus, NoScript, Ghostery, uBlock Origin) always make sure such extensions do not block (wanted) content.

• make sure your extensions and filters are updated to the latest version

You can check the Web Console (Tools -> Web Developer) for messages about blocked content and about the presence of mixed or unsafe content.

• https://developer.mozilla.org/en/Tools/Web_Console

You can check the Network Monitor to see if content is blocked or otherwise fails to load.

• https://developer.mozilla.org/en/Tools/Network_Monitor

If necessary use "Ctrl+F5" or "Ctrl+Shift+R" to reload the page and bypass the cache to generate a fresh log.

There are other things that need attention. The System Details list shows an outdated plugin.

• Shockwave Flash 19.0 r0

You can find plugin details like the installation path on the about:plugins page.

• http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins

You can download the latest Flash player plugin for Firefox on this page.

• https://get.adobe.com/flashplayer/otherversions/

Cor-el, thanks for your inmediate response, but I am a bit baffled, I have to check too many options and don´t fill too confident. but let me add also I went to may daughters notebook, she uses also this same firefox and the captcha appeared, and from there I could access the page. What set-up in my pc could be hampering???

Thanks

Please provide public link(s) (no password) that we can check out. No Personal Information Please !

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Can you post the extensions list as shown on the "Help -> Troubleshooting Information" (about:support) page?

• https://support.mozilla.org/en-US/kb/use-troubleshooting-information-page-fix-firefox

Did you try Firefox Safe Mode.

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode