Configuration error

I have a “configuration error” (supposedly) in my Contact Form 7. According to the web site there should be a validator as I am using v4.4.

How do you invoke the validator? How do I find out what the configuration error might be?

There is absolutely no information as to what the error might be or where to go from here.

BTW: why is there no way to search the Contact Form 7 forum? How do I find out if this query has been posted before without lookin at every one of the 620 pages?

https://www.ads-software.com/plugins/contact-form-7/