Importing deck from ankiweb to anki

Hi can you please help me
I have accidentally been using the orange ankiweb app for the last few months. the biggest exams of my life are in one week and i have just realised that ankiapp is what i should be using. i can’t seem to import my decks across to this app
can you pls pls help me

when i followed your instructions and downloaded import from anki web
i just seem to get error message

If you’re trying to import cards from AnkiApp, please see AnkiApp Importer. If that’s what’s giving you an error, please post the error message on that thread.