Nice. Sorry for plugging this but I also wrote a similar one https://hn.etelej.com as a PWA that just focuses on the top 60 posts every 5mins and allows searching through the; links to comments though
Nope. Same here. However, it's just Chrome on Android that doesn't recognize the CA, even the native android browser is okay. Bizarre, may be coz they have an incomplete cert chain https://www.ssllabs.com/ssltest/analyze.html?d=www.graphengi... and chrome on android has had issues with that