After all the problems yesterday with genuine comments going into my Trash folder, when I logged on this morning, I found six more.
So I went straight to the Help option (A big ? in a circle) to chat online with a WP technician on Live Chat.
(This option is available to me as I have a paid plan, Premium.)
After some investigation, WP suggested to me that the comments contained some of my banned words, in particular a combination of the letters RV. This means that words such as ‘Deserved’ and Served’ containing those letters in combination caused the comment to be trashed.
Although this did not seem obvious to me, I have done as they suggested, and removed ‘RV’ from my banned list.
I originally put that on the list as I was being plagued with Spam from an American motorhome company using ‘RV’ (recreational vehicle) in their messages.
If the suggestion from WP does not improve things today, I will be straight back onto them and contacting the Live Chat again.