Thank you so much for your positive review.It means a lot.
You will need to reload/refresh tab in order for this addon to work again in same page/tab. I would suggest before starting to download images , try loading all the images you need (by scrolling down the results page) and then press addon button.
I working on solving this issue in new release (more exciting features coming up), till that point please use this method.
Please feel free to contact me on my support email in case you need more details or any other queries.
