Hello, your images are in the feed, there is no problem with them that I can see, if Google is still not showing them you need to ask them why. If you have just recently changed your robots.txt file to allow Googlebot to crawl your images folder then it can take them a few days to register this and re-crawl the images, you may just need to wait, it takes them time to catch up.
If the feed is not showing all your products then you need to change the options you have chosen in the GooglebaseXML configuration - if you post a screenshot of the options that you are using this would help. Also please check the documentation
here, you may find that it gives you the answer you need.