If the handwriting recognition shows a wrong default language, please navigate to Options>Settings>General>Default Language and check whether your language settings are correct.
Handwriting recognition still shows the wrong language
- Change language to any other in Options>Settings>General>Default Language
- Change it back to your preferred language
- Quit GoodNotes by double clicking your device's home button
- Open GoodNotes again and create a new notebook
Every new notebook should now show the default language when converting your handwriting or searching for it.
My old notebooks still show the wrong default language
If you need to search or convert your handwriting fairly often, you can copy the pages to a new notebook, so that it will show the right default language. The old notebook can be deleted afterward.