how do I stop this pop up

Hi Nige, are you using an add blocker like ublock? If not, check if you have have your enhanced tracking protection - click on the shield next to the URL and see if it's on.

I have unlock & the shield but still popping up

Hi Nige

What level of Enhanced Tracking Protection do you have set?

Strict

You may wish to consider using a lower level of Enhanced Tracking Protection.