Problem viewing blog page after importing (wordpress to word press)

I have a wordpress blog:
https://rosewarnegardendesigns.wordpress.com/2012/03/26/media/

I import the postings periodically to my website blog page.
https://www.rosewarnegardens.com/blog/

Everything to date has been fine but today it is giving me a 404 Page not Found Error on the ‘continue reading’ link for this posting

https://www.rosewarnegardens.com/media/

in fact on any type of page/post view of the page. I can preview it, I can see it from the dashboard, I got no error on import and have tried re-importing several times, all ok according to the import.

The posting before, also newly imported, is fine and can be viewed.

What happened?