Unable to open Nintex Workflow for Office 365 Designer with the Network browser error "Field type [field name] is not installed properly. Go to the list settings page to delete this field"
Nintex Workflow for Office 365 is does not load and shows a spinning circle. Furthermore from the Browser Developer Tools (F12)> Network tab, the following error may appear: Field type [field name] is not installed properly. Go to the list settings page to delete this field
Verify if the "Field type" mentioned on the error message exists and delete it as per error message advised.
Contact Microsoft Support for guidance if you are unable to find or for any further details regarding the mentioned "Field type".
The field type mentioned does not belong to Nintex, therefore contacting Microsoft Support is recommended.