I found Let's Encrypt not be trusted in a lot of app built-in browser


I tried to install letsencrypt on my website, and now I can use it on pc browser and iOS mobile,
but I found that I can not open web page in most of app built-in browsers, such as fb app, twitter app, etc.
is this right for now? how to fix this?


This sounds like a missing intermediate certificate. Run SSL Labs against your site and look out for intermediate cert warnings. You’ll want to use either chain.pem or fullchain.pem in your web server configuration - if you’re not using one of those, the chain to the trusted root certificate is incomplete.


Thanks, let me try now


resolved! thanks! :heart_eyes: