Has your app that's been working suddenly been rejected? Has is suddenly stopped working on live when it was a second ago?
SSL certificates have expired. This is for me so I remember what to do.
- Generate a new SSL certificate(s) from wherever you get them.
- Log in to your apache server.
- Upload the certificate(s), overwriting the originals (back up just in case).
- Restart apache:
sudo service apache2 restart
SSL is important for stuff.