I have a form I need to enter data into then print. I have Adobe Acrobat but it states I must have LiveCyle Designer to open the form. It is a free trial but keeps asking me for a serial number have way through/

I have a blank PDF form that I need to enter information into and then print.  I installed Acrobat and it says I need to use Lifecyle Designer to open the form and I still cannot enter the information.  Can anyone tell me what I need to purchase?