It is possible that the UK ISP is blocking the port that you have forwarded, for some reason.
As for ping, have you allowed ping on your router, some do not answer ping on their WAN port, by default.
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It is possible that the UK ISP is blocking the port that you have forwarded, for some reason.
As for ping, have you allowed ping on your router, some do not answer ping on their WAN port, by default.
Install Tailscale on it and bobs your uncle
Are your router firewall rules configured to block/accept traffic from certain countries.