Sorry to hear this, if you right click an svg you should be able to download the entire thing which would contain the paths. If you don't mind linking me the website where this doesn't work I might be able to fix.

EDIT: I have identified the issue (https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/xlink:href / https://developer.mozilla.org/en-US/docs/Web/SVG/Element/use) and am working on a fix

EDIT: Fix is ready (https://github.com/Douile/image-saver/commit/bafc29688f33d355b0c91966015ade6d63347191) and will be included in next release

EDIT (14/09/2020): Fix is in update version 1.0.0