SiteMap Error

Hello Everyone & Support,

Note: I am new in wordpress and also i am a beginner so please co-operate with me. I am unable to understand the google sitemap xml. I have installed the google sitemap generator, but the site map doesn’t show me any post or pages. Plus i dont understand google is not picking up any of my inner pages of my website. Its displaying my site map in the following:

http://www.playcasino.co.za/blog/sitemap-pt-mslider_second-2014-08.xml

http://www.playcasino.co.za/blog/sitemap-pt-post-2015-04.xml

http://www.playcasino.co.za/blog/sitemap-pt-post-2015-05.xml

http://www.playcasino.co.za/blog/sitemap-pt-post-2015-06.xml

Please assist me
Thanks

https://ww.wp.xz.cn/plugins/google-sitemap-generator/