I got problems with connecting my iDJ Pro to my iPad 4 since the last update. it says it cant connect because of some audiobus problem.
Which update do you mean - iOS or djay update? Which iOS and djay version do you have now? Also, do you have the official lightning to 30-pin adapter from Apple?
Are you even using Audiobus at all?
Please open the Settings app and go to “General” > “About”. Can you see an entry saying “IDJ PRO”?
iOS and djay 2 are both up to date. so yeah ive got the newest versions available and yes I bought the adapter from a Swiss Apple store.