We need a postal code to replicate.

NG17 4NX

Thanks. Let me try to register and see what happens.

It works for me. I was able to register, login, logout, and log back in. see screenshots You need to show the issue. Just saying there's an issue doesn't help us help you. Do you have the same issue with Firefox in Troubleshoot Mode?

No!! It worked OK in Troubleshooter Mode!!

Still doesn't work in non-troubleshooter mode

Maybe Malwarebytes Browser Guard.

If it works in Troubleshoot Mode and in regular mode with all extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) disabled, try to find which extension is causing the problem by enabling one extension at a time until the problem reappears.

Close and restart Firefox after each change via one of these:

• "3-bar" menu button -> Exit (Power button)
• Windows: File -> Exit
• Mac: Firefox -> Quit Firefox
• Linux: File -> Quit

Add-ons used a) Dashlane & b) Malwarebytes Broswer Guard

1) With both (a) & (b) installed issue is still present; 2) with only (b) installed, issue still present; 3) with only (a) installed, issue NOT present

So the MalawareBrowser Guard is the root cause of the issue.

Thank you for your help,

This is a known issue between the latest version of Firefox & Malwarebytes Browser Guide

https://support.malwarebytes.com/hc/en-us/articles/4410269415443-Duplicate-blocks-in-Firefox-with-Desktop-Security-for-Window-s-integration-with-Browser-Guard