im lost

I had that too. I contacted Smarty and they tried saying that I need to contact Netflix as this warning only appears on Netflix. I replied 

"But none of the other apps would be bothered If I used a VPN. So the fact that they don't give an error doesn't mean anything. Also, if I use my Talkmobile sim I don't get this error."

The error disappeared shortly afterwards. 

I asked Claude and sent it a screenshot of my router settings where there was no VPN set up and it said. 

"a { text-decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; }

This confirms what I suspected earlier: the Netflix "VPN detected" error isn't coming from your Mercusys device. It's coming from SMARTY's network (Three), which routes many customers through shared/CGNAT IP addresses that Netflix has wrongly flagged as VPN/proxy servers. That happens out on the mobile network and can't be fixed from these router settings.

Hope this helps.

ConradT_3644266​ Have you checked that your device definitely isn't using a vpn?

Some security programmes use one and so that might need to be turned off.