My dad has an iPhone 18 Pro Max. He's been using Apple's Braille Screen Input on it with great success. Then last night, it suddenly stopped working well for him, and he hasn't figured out what happened or how to fix it. He can type things like a full cell, dots 4-5-6, l, etc. but can't type real words on it. Anyone know what might have gone wrong? Please boost for reach. Thanks.