I have heard that custom SmartForm controls cannot be used in K2 Cloud. Is this true or not?
Best answer by timkn
True.
https://readiness.k2.com/download/movingappstok2cloud-doc
K2 CUSTOMIZATIONS
The following customizations are not currently available within K2 Cloud:
• Custom K2 SmartForm Controls
• Custom K2 SmartForm Themes
• Custom K2 SmartObject Service Brokers
• Custom User Managers
• Custom Inline Functions
• Custom code