Website score optimization for https://www.deerludo.com

Site-level issues
1. HTTP and HTTPS -----There is no redirect from HTTP to HTTPS. Both protocols work and return the same content.
2. 404 page ------- Error page doesn't respond 404 status code
3. Robots.txt ------ Site has no robots.txt file.
4. XML sitemap -------- Robots.txt file does not contain a link to XML sitemap file
5. Strict Transport Security ----- Redirect to HTTPS is not implemented in response header


All issues
Criticals

Duplicate pages without canonical : 4 pages
Title duplicates : 4 pages
More than one title tag on page : 4 pages
Home page is rated 48 of 100 in Mobile PageSpeed Insights.

site-level
Redirect to HTTPS is not implemented in response header
site-level
Robots.txt file does not contain a link to XML sitemap file
site-level
Site has no robots.txt file.

site-level
Error page doesn't respond 404 status code

site-level
There is no redirect from HTTP to HTTPS. Both protocols work and return the same content.
sit