Why am I getting an 'invalid character' error when using an apostrophe?

If you encounter an error message saying "invalid character" while trying to use an apostrophe (e.g., '), and you're on a mobile device, you may need to adjust your input method. Try holding down the apostrophe key on your keyboard and select the vertical (straight up and down) accent rather than the angled one. This should allow you to proceed with your personalization and add the item to your cart.