Google Maps Embedding No Longer Working – API Key Issue

Google Maps was working on the following page for years without any problems. It is embedded to the bottom of this URL:

https://www.bromptons.net/kensington-london-contact-office/

Now, as you can see, it shows an error message:

“This page can’t load Google Maps correctly.”

We understand we need to get an API key from Google Cloud. So we have now obtained a key from our account.

I will use “KEYHERE” in place of the actual key below.

We have added this key to the URL trying different variations. For example:

https://maps.google.co.uk/maps?key=KEYHERE&?q=Bromptons+Solicitors,+Kensington+High+Street,+London&hl=en&ll=51.49982,-0.197153&spn=0.015709,0.049567&sll=52.8382,-2.327815&sspn=7.808158,25.378418&oq=bromptons+solicitors&hnear=Bromptons+Solicitors,+219+Kensington+High+St,+London+W8+6BD,+United+Kingdom&t=m&z=15&iwloc=A

However, no matter where we put the ?key=KEYHERE variable, we are still being presented with your error message.

It is only through this URL structure we can add Google Maps to our page, as we are using a WordPress plugin.

Please can somebody advise how we may use the following URL with the aforementioned API Key – or any other fix – so the map displays correctly:

https://maps.google.co.uk/maps?q=Bromptons+Solicitors,+Kensington+High+Street,+London&hl=en&ll=51.49982,-0.197153&spn=0.015709,0.049567&sll=52.8382,-2.327815&sspn=7.808158,25.378418&oq=bromptons+solicitors&hnear=Bromptons+Solicitors,+219+Kensington+High+St,+London+W8+6BD,+United+Kingdom&t=m&z=15&iwloc=A

Thanks very much!

The page I need help with: [log in to see the link]