iPhone 16 Calendar keyboard missing keys

On my iPhone 16 calendar, the spacebar, comma, and return have disappeared from the keypad. There is a spacebar on the number screen, but it shows up as a %. I tried restarting my phone and looked in the keyboard section of General in settings, but can't find a fix. It was working fine yesterday, and the keyboard is normal in the texting app. I don't know what I did to change it in the calendar. Thanks for your help.