Pagoo2,
Is your textField contained within the Subform that you placed on the form, or is loose (outside the subform). If it's wihtin the subform, make sure the Subform AND textField are BOTH set to "Allow Page Breaks Within Content.
Just FYI (in case you weren't aware): Even if the content within a Subform is Allowed to Break Break, it won't if the Parent Subform isn't allowed to break.
That being said, you should also check that the Main subform (whatever it's titled...i.e. Page1) is also Allowed to Break. In this case, even if you allow various Subforms within the page to break, they won't if the Main subform (that being the actual Page title) isn't allowed.
So basically, make sure the Main Page subform is allowed to break as well as all subforms. if you want specific items within subforms to break too (ie your text field), make sure its set to break as well.
Hopes this helps you.