[Plugin: Custom Field Template] Can't create forms

If you are referring to the place, where you have placed your custom fields, then there are two possibilities:
1- the “Custom Fields Section” isn’t loaded, check for a section called “Custom Fields” that is minimized and often overlooked, and you will find an “initialize” button that you must click to initialize all your fields.
2- Custom Fields section is not checked to be shown, click the “Screen Options” on the top right of the screen and make sure “Custom Field Template” is checked.
Otherwise, explain briefly your problem