Translation with WPML isn't work

Hi Friend,

I’m using the last version of WP Knowledgebase with WPML to portuguese translation, but i recived this message:

“Hey, I see WPML is not activated, please activate it before using WPML Widgets.”

What do I doing wrong?

Thanks for your attetion

https://www.ads-software.com/plugins/wp-knowledgebase/