Not every control available in InfoPath can be used in Formotus forms. This is a quick list of unsupported controls, or you can see the master list.
Do not include the following controls in your forms:
- Rich text box
- Combo box (How to build an alternative to a Combo box )
- Multiple selection list box
- Date and Time picker (Date picker is OK)
- Choice group, and choice section
- Recursive section
- Digital signature
- Horizontal repeating table
- File attachment
- Vertical label
- Repeating choice group
- Repeating recursive section
Also: Formotus does not support any custom code in InfoPath forms and does not support UDCX data connections.