If you had bought the OALD8 app previously, then you should be able to see OALD8 in the Catalogue tab so that you can re-download it and continue using it for free. If you cannot see OALD8 in the Catalogue tab, first please make sure that you are signed in to the App Store using the same Apple ID you used to purchase OALD8 originally. Then tap the Restore button in the Catalogue tab. You should then see both OALD8 and OALD9 and you should be able to re-download OALD8 at no cost.
If this does not work, then please delete the OALD app and restart or 'force restart' your device. Once your device has restarted, please reinstall the OALD app from the App Store (making sure that you are signed in with the same Apple ID you used to purchase OALD8 originally), then tap the Restore button in the Catalogue tab.
You could also try signing out of your App Store account (Apple ID), then reopening the OALD app and pressing the Restore button again – you will then be prompted to sign in with your Apple ID while within the app and sometimes this can make a difference.
If you are still unable to see OALD8 in the Catalogue tab, then it suggests that you may have been using Family Sharing to access OALD8 previously. You will no longer be able to do this. For more information on why Family Sharing doesn't work anymore, please see here: https://oxfordeltdictionaries.zendesk.com/entries/108385196-Why-doesn-t-Family-Sharing-work-anymore-.
If you had not previously purchased the OALD8 app, then you will only be able to install OALD9 now, i.e. you will only see OALD9 in the Catalogue tab.
If you continue to experience difficulties, please contact us via the email link in the app.