Search data not shown

Under “Visitor Statistics Pro”, when I look at “Traffic Sources”, all the sections under that are blank, with the exception of “Referral Websites”. “Top Referrer Sites” is blank under “Refering Sites” (your typo, not mine), as well as “Top Search Engines” under “Search Engines” and “Latest Search Word Statistics” under “Search Keywords”.

Why is this blank, and how do I fix it?

I am currently using WP 5.3, and this data was also missing in 5.2.3 and 5.2.4.

Thanks!