Hi, is Quick Forms an add-on?? You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. To open that, 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 related to Quick Form here? 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.

Hope that helps, but let us know what you find and what happens.

Also, if you bought a subscription, you'll need to cancel that directly with the vendor.

See also:

• https://support.mozilla.org/en-US/search?product=firefox&w=2&q=QuickForms

tQuick Forms is not removed!

You can do a malware scan just to be sure.

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware

tQuick Forms is not removed!

Just to be clear, we do not have remote access to your computer. We'll need you to take some steps we suggest to remove the unwanted software.