Hello,
Thank you for bringing this issue to our attention.
I have been able to replicate the problem where adding product images and galleries is not working after most recent update of the plugin. I have forwarded this information to our development team, and they will be working on a fix shortly. Once the update is ready, I will inform you immediately.
In the meantime, I recommend reverting to the previous version of the plugin. You can do this by visiting the following link: Advanced View. Scroll down to the bottom of the page where you can find and download the previous versions of the plugin. I suggest downloading version 2.0.0, which should work without this issue.
Please let me know if you need any further assistance.
Best regards,