On Safari on iOS, the generative recolor on the Firefly mobile site will crash if you load a larger SVG (over 1.5mb) to recolor. As soon as you describe your palette, it reloads and crashes.
You are uploading SVG to which module? Only module that supports SVGs is SVG recolor. There is no modules that can generate having SVG as a reference. Inpaint supports jepg and png files.
I have the same issue in recolor when trying to color svg files exported from Photoshop. I get a message "File contains elements that cannot be modified" and there is no change to the file. There are no locked elements in the files afaic.