Wanted to update everyone on my LinkPi ENC5v2 for anyone getting one
Mine did arrive with no papers of any kind and no instructions.
Once hooked up the IP address should show on the front lcd screen
username/password admin/admin
As stated by @spammedeeper use http://xxx.xxx.xxx.xxx:8090/stream1 for ADBTuner
I spoke with WayPonDEV and they suggested I use the lastest chrome browser for the webpage. I was already using that but once I reset the browser it fixed the overlapping menus and my inability to select classic/standard view.
They are also aware of the issue with changing Mix names to Chinese if you resave a default one in the Custom Layout Manager. They said they are working on fixing it.
I tracked down the VideoMix bug not working if you set the output mix to multiple HDMI's instead of a single HDMI.
I can recreate this by setting framerate to -1 on the encode page, having Mix set to output multiple HDMI's not just one, and then switching between Classic/Standard view. Not completely sure you have to even switch views but it makes it show up immediately on preview and hdmi output. The -1 seems to work for a single HDMI fine but it is outside of the recommended range of 1-60 on the wiki page i found.
Not sure if anyone had posted it before so here is the wiki...
At least on my browser they have a menu on the right side that covers up part of the chart showing all the specs for the different LinkPi's but if you change the zoom in chrome to 80% I can see the entire chart.