After an upgrade several weeks ago I lost the ability to connect to NPN via my iPhone. I get the following message:
Unfortunately, your browser is not supported. Please upgrade to a supported browser to view rich content, login and reply.
Part of this message is almost impossible to read because it’s yellow fonts on a yellow background. The iPhone is up to date and is using the native safari that comes with. At first I was accessing NPN directly from the browser. Then I downloaded the NPN app and am still getting the same browser message.
I did some digging, and it appears Discourse dropped support for older versions of iOS/Safari in January. So the solution is to upgrade to the latest version of iOS. The 8 Plus does support iOS 16.