EasyBlog 5.2 RC

When adding a new post (blog) to my site, I remarked the notifications to subscribed users are not sent.

I cannot figure out what is wrong. In my opinion all the settings are ok!? (see bitmaps)
I also tried a resent, see birmap with arrow, but is doesn't work. :(

What can be wrong?

Thank you for your answer, Kind regards, T.W.van Urk
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