I need to change my user-level app to account level but I am not even able to delete it and create a new one.
Thank you for posting in the Zoom Developer Forum. This question/topic has been addressed in the post below. Please see the conversion concerning this topic and share any feedback you may have there :
We have just released the multiple SDK app feature on marketplace.
In case there are some changes you wanted to do, you can now create additional SDK apps on your marketplace account.