The Eraser Tool in GoodNotes can only be used to erase pen & highlighter strokes. It doesn't work for typed text, PDF text, images, scans, etc.
If the eraser doesn't work, please go through the following steps to identify and fix the problem:
- Check if the eraser is set to "Erase Highlighter Only" by double tapping on the Eraser Tool icon in the toolbar
- Are you trying to erase pen or highlighter strokes on a page that is actually a PDF? That sometimes happens when you exported a document and imported it again and won't work with the Eraser Tool. You can double-check if that is the case by trying to select something with the Lasso Tool. If that doesn't work, it is most likely a PDF document.