Hi,
I tested my site, got C,A,B,A.F.B and a checkmark… The F concerned me so after some exploring ran all my wordpress site’s images through the plugin “Prizm Image,” that can convert sequential jpegs to progressive jpegs, then re-ran the test, and still the same F… I checked some of the images before and after here- Progressive JPEG tester - that determines if a jpeg is pregressive, and the before was not, and the after was yes it is progressive…
All caching has been reset several times to be sure, wp super cache, cloudflare, and browsers…
I believes this classifies as something I was not expecting, per your description of this forum section… (-:
my website is www.spiritawake.net…