Google Sitemp: Submitted 1000 URLs, only 50 Indexed

[Lon]

Hello,

I recently installed Coppermine v1.5.30, loaded 1000 photos, created a sitemap using PHPSitemapNG making sure the formatting and all the URLs were correct, and submitted it to Webmaster Tools, as I have for all of my web pages (5,000) and Google indexed only 70 photos. I have all the gallery app parameters (cat, pid, album, etc) specified so non-actual-photo URLs don't get indexed but there should be a lot more than 50. A sample of my submitted URLs are as follows:

<url>
    <loc>http://www.mysite.com/gallery/index.php?cat=2</loc>
    <lastmod>2014-10-31T12:26:08-07:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
</url>
<url>
    <loc>http://www.mysite.com/gallery/displayimage.php?pid=19</loc>
    <lastmod>2014-10-31T12:26:08-07:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
</url>
<url>
    <loc>http://www.mysite.com/gallery/thumbnails.php?album=4</loc>
    <lastmod>2014-10-31T12:26:08-07:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
</url>

Has anyone figured out how to get every photo or file indexed?

[allvip]

Maybe that can help.
Sitemap Generator plugin: http://coppermine-gallery.com/forum/index.php/topic,73428.0.html