Try disabling Tracking Protection for the site.

I have already tried this I added www.web3forms.com to the exceptions for site tracking and reduce my site tracking to standard from strict. This still does not solve the problem. Sorry about the typo in the title. It should of course be Web3 forms

Also it works fine on the iPad Firefox browser.

You need to add your website to the exceptions list rather than the third-party script. The easiest way to do this is to disable Tracking Protection for the current site.

Added my site, still doesn’t work. Don’t reallyant disable all protection. Also this doesn’t help much as it means Girefox is stopping my site’s spam protection from elsewhere

Disabling protections is just for testing purposes so we can rule them out.

Does it still happen in Troubleshoot Mode?

OK , so now with mt site in exceptions it is working fine on my laptop