Dear David Cattermole,
1. We see only one product, which was buying from your email, it is Simple Membership PRO.
On your website we see OS Responsive Image Gallery FREE version. It must come with our copyright.
"Copyright ©2016, OrdaSoft. All rights reserved."
2. we can help you with "narrow strip in the middle of the image". Give us
full FTP and admin access
and our team will try to find solution special for You, FTP and admin access You can send to our contact form.
Link on website
BUT if you use FREE products, on your website must be our copyright.
3. Even if you use PRO, we have for single template, theme or extension One domain license. A domain license means a domain web installation of one of our product. You use our module on 2 websites.
You need buy OS OS Responsive Image Gallery twice or return copyright. Or you can buy Joomla Developer Plan.
Recheck our terms and conditions
4.In admin area you able set size for images. OS Responsive Image Gallery is a simple module. It has easy settings and works well on desktops, mobiles or tablets.
Try set size for images or upload other images.
If you will have any other questions, please ask.