Unidentified widget on my WP site from CJ

Hi all! A few days ago I found a strange, foldable booking widget on my WP site. It appears on all posts even in incognito. After inspection, I found out it was a CJ widget. Yet I have nothing to do with CJ and I am not using them. I contacted my hosting and we checked everything and it turned up it only appears on my Chrome browser. But I cleared everything, and restored Chrome yet it is still there. Something is very wrong as this is showing up only on my website, nowhere else. I scanned for malware, I have Worldfence which didn’t detect anything. I am going crazy. Does anyone know what this could be?

 

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