Ok,

however i logged in and now see that Google doesn't report any images blocked by robots.txt.
By the way if the images were blocked it was not for robots, because it was ok.

I submitted also alternative links for sitemap SEF rewritten, just to ensure that Google doesn't use cache and to force a new fetch of sitemaps.

Now we should wait a couple of days to check if Google indexes everything correctly.

As a final thought, ensure your web hosting is not using some firewalls or similar technologies that block bots, this could be the reason for URLs blocked instead of robots.