That's not a Firefox browser issue you need to contact that site to complain about that issue.

Thank you for sharing your add-on list. Believe it or not, you have one called "TrumpBlock" that dates back to November 2016. If you didn't install this, do you share your Firefox with anyone else, or has anyone signed in on your Firefox (merging add-ons from their Firefox installation through Sync)?

I think it would be a good idea to do a general review and clean-up of your extensions. Here's how:

Open the Add-ons page. Either:

• Ctrl+Shift+a (Mac: Command+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons
• type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. On the right side, find the "Manage Your Extensions" heading.

If there is at least one extension before the next heading -- "Recommended Extensions" -- please continue:

Then cast a critical eye over the list below that heading. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove). For your privacy and security, don't let mystery programs linger here.

Any improvement?

Note: Sometimes extensions can frustrate access to this page. In that case, first restart Firefox in its Troubleshot Mode and then try again. See: Diagnose Firefox issues using Troubleshoot Mode -- Open, not Refresh.