The first thing to note is that both of your web pages load the same gallery. (Both web pages are in the same directory and load the same embedding code.)
This might be your intention (to simply update the gallery on both pages) but I cannot be sure so I thought I should point this out in case it helps.

The 'config.xml' file for the gallery (displayed on both web pages) can be found here: https://www.soroptimistireland.com/config.xml
It contains only 6 <image> entries.

Maybe your FTP program is set to not replace existing files so when you upload the new 'config.xml' file (containing 16 images), the FTP program sees that there is already a 'config.xml' file on your web server and skips uploading the new version.
Make sure that your FTP program is set to overwrite existing files or delete the existing 'config.xml' file first, before uploading the new version in its place.

After uploading the new 'config.xml' file, clear your browser's cache and then view it directly in your browser (using the link above) to see what version it is.
If the file still shows 6 images instead of 16, then your web server may have some sort of server-side caching enabled.
Please check with your web host to see if they have server-side caching enabled on your hosting account and ask them how it can be disabled.

I hope my notes above point you in the right direction.