Gallery Thumbnail size won't change

My gallery used to work correctly, then I updated wordpress and plugins.

Now the thumbnails in my albums are 91x68px – much smaller than the size I set them to.

The weird thing is they work in the gallery, but not in the Albums. See https://momentumpools.com/our-pools/nggallery/family-pools

I’m using customised templates, but haven’t changed the way the thumb url is generated

Steps I’ve taken:

• Disabled all other plugins
• Other Options > Misc > Clear Image Cache
• Tried setting a different pic as the thumb
• Ensure override thumbnails is set to true (even tried changing it to somethign else)
• Force refresh browser etc

I’m stumped.

Everything is up to date. Godaddy hosting ??
https://www.ads-software.com/plugins/nextgen-gallery/