Trouble Adding Domain Item & Deactivating

Hi,

I recently installed heapanalytics.com on my site and needed to add them to the image-src section. The problem was I couldn’t. I would type the entry and hit enter. Immediately the status bar would say it was waiting for my domain. I would then hit the Save button at the bottom of your page. Sometimes the entry would stay other times not. I finally got it to stick but I still got errors in Chrome DEV Tools.

I tried to deactivate the plugin so I could still use HeapAnalytics. I got the message it had been deactivated but the setting didn’t change in WordPress.

I don’t know if some change to WordPress 4.8 is causing this or somehow I corrupted my installation. For the time being, I’ve renamed the plugin folder. I’d like to reinstall but I don’t want to re-enter all my items. Is there a way to do this? OR, would you suggest another approach.