AS an owner of other groups.io blogs... groups.io offers a plain text, minimalistic blog without HTML at no cost to the group. It has limitations regarding file storage etc.
But for obscure blogs like "Gramma's baby sock knitting group" . That is fine. or a small ham club like w0vfw.groups.io.

Now if you buy the blog-group and pay I think an annual fee. You get HTML editor increased file storage etc.. You either self fund it, or beg for donations. I am unaware if you go "big" to begin with you can revert to the free limited version, should donations not make the subscription fee...

So, it's obvious Daddy WARBUCKS is not a ham nor does he own a NanoVNA...

Merry Christmas, Paisan - Mia madre è italiana al 100%
Larry W8LM.