I understand that some readers have difficulties leaving comments. I apologize for this; however, I don't know how to fix it.
When I leave a comment, I type in the comment and then hit Preview, NOT Comment. Blogger asks me what sort of identity I want to use, I sign in, and then I can hit Comment and it publishes.
I have looked at other blog hosts to find one with more user-friendly Comment features. But Wordpress insists that all commenters have a Wordpress account. I liked the looks of Squarespace, but it's not free. :(
If anyone else knows how to get Blogger Comments to work for everyone, or can suggest another blog host, please let me know. I admit I don't often check the email account associated with this blog but I'll do so more often.