I'm not sure if I am posting this to the right place, so if not don't be mad at me I want to ask why google doesn't index all pages of my website and the ones who are indexed are now changed and google shows old information. Sitemap is installed. So what can be the problem and how to solve it? Please help.
if you want to maximize your chance of getting all pages indexed: 1) avoid no low-quality / duplicate URLs 2) XML sitemaps only containing those URLs you want 3) have lots of inbound links. All help both speed and depth you will get pages indexed.
All of the above are great answers and should be used together and be sure that the site is quality and has some great content, and forget about the junk pages, they will just hurt you in the organic search results...
Make sure all your internal links are working. Fix all broken links. If you're using a sitemap generator, it should present a report of all 404 errors it found.
Yes, absolutely. Make sure to add a xml site map on your website. You can create one at xml-sitemaps.com
Yeah, and 4) Make sure your site content structure OK 5) Seperate your XML sitemaps to category-sitemap if your website is big.