[SmartCrawl Pro] Sitemap not generating properly

We are having a few issues with the smartcrawl sitemap portion. Firstly the sitemap.xml is not generating absolute URL, it's only generating Relative URL's which google is picking up as an error. So during the debugging we noticed we have over 340+ missing URL's from the sitemap. After checking the sitemap, most of these are actually inside it, when we click Add to sitemap the system does nothing. I believe there is an underlying issue here, please advise.