I have published a PowerApps customised form to a SharePoint list believing I could switch back the list back to the default form. I should be able to do this. However in list settings > form settings, the settings are missing. I have 'The list does not have any valid content type' instead.
This is problematic because this list is live and the PowerApp is nowhere near finished yet. I could really do with switching it back. Does anyone know how to restore a default list form in SharePoint or how it might have got deleted? It was there before I created the PowerApp. I have not intentionally deleted it. Thanks so much.