LAN IP can't connect to URL

I have Photocopiers set up on static IP Addresses on my Sophos XG 135.

They are on lease with a company that has a URL for them to be in contact with in order for them to send new cartridges etc.

So I have set up a firewall rule allowing the LAN IP's to allow all traffic in and out to any WAN address.

Furthermore I have set up the URL address in the web exceptions.

However, neither of these have allowed the copiers to contact the URL in question.

Is there any way to allow a certain URL to contact a LAN IP range?

Any other suggestions?

Thanks in advance

Edited TAGs
[edited by: emmosophos at 7:44 PM (GMT -7) on 14 Apr 2021]