Hello again,
I am sorry to hear that the tool is not operating for you as it is the tool that eBay makes available for generating the gallery image when there is an issue. Unfortunately, we are unrelated to eBay and have no control of the state of that tool.
We are aware of the difficulty that this represents and our engineers are looking into this issue as rapidly as they are able and we will update this thread as soon as more information becomes available.
- Craig