I don't know if it's a coincidence, but it seems after installing this plugin I lost ranking.
I just now unchecked add sitemap URL to robots.txt. And added the sitemap URL manually there now to robots.txt. I don't know if that impacted rankings.
I also don't know if it was a plugin that screwed things up, whichw as jobs manager. It at times killed my permalinks. So I don't blame the sitemap plugin for sure for my lost rankings.
Has anyone experienced a dramatic loss of ranking of pages after installing this plugin?