[Plugin: Google Search for WordPress] Search result titles link to google search and not post

I installed this plugin on a client’s site. The widget replacement works, but instead of the resulting post links linking to the actual article, they link back to google searches. You can see an example here: https://www.thehappyseeker.com/?s=spruce+tree

Am I missing something?

https://www.ads-software.com/extend/plugins/google-search/