I set up lets encrypt by following the instructions in the wiki but the page is still showing HTTPS errors.
This is from Chrome
The connection to this site is using a valid, trusted server certificate.
The connection to this site is encrypted and authenticated using a strong protocol (TLS 1.2), a strong key exchange (ECDHE_RSA with P-256), and a strong cipher (AES_128_GCM).
Active content with certificate errors
You have recently allowed content loaded with certificate errors (such as scripts or iframes) to run on this site.
Content with certificate errors
This site includes resources that were loaded with certificate errors."