When the Rover IDX plug-in was deactivated, it did not remove a site index file that it created in the media folder, this resulted in 28,000 404s happening when google indexed the website. This is sloppy coding at best. When a plug-in is removed it should remove all files it placed on your site. I used ftp to remove the file manually.
Also a plug-in should play nice with the DIVI Theme, not the other way around. This vendor refused to update the plug-in code to set a z-index that would keep their pop-up menu on the top layer. This would have been one line of code. There were also too many other bugs I reported to the vendor. I even sent many videos showing the bugs and got not help. If you are a realtor looking for IDX for wordpress I would keep looking as this plug-in is not programmed well.