@iguanamom
Thanks for your help
I downloaded the previous version and the problem was all clear.
I think this latest version has something bugs.
When those who are facing this problem like me, you need to downgrade the plugin.
At this website, you can download the previous version.
https://pluginarchive.com/wordpress/ultimate-faqs#google_vignette
@iguanamom
Although I deleted the shortcode and cleared all cache, it’s not yet to be solved.
Before updating this plugin, it had been working well.
Did you update the latest version of Ultimate FAQ?
Do you know where I can download the previous version of this plugin?