A community photo gallery - My Photo Gallery
Looks like the importer did its job perfectly if you ask me so not sure why your saying you have big issues with it.
You can run this script to try realigning photo and comment userid's
There are a couple configuration issues with your gallery you need to fix.
1. in global options in admin make sure your seo setting is set to NONE as your server is not compatible with spider urls. You can not attempt SEO urls until you create HTACCESS to .htaccess.
2. in storage options in admin hit revert and save twice to load the proper urls and paths as your data url is missing a slash between galeria and data which is why the large image does not show on the photo display.