Hello Form Central,
I want to use the service for a Research.
I will need the form for a first three months, then go off to do the writings.
Then after two months off I will need the service again for another three months
Question: Is it possible for me to pay for the time/period that I need the service?
Or do I have to pay for my "un-used period"?
>>Is it possible for me to pay for the time/period that I need the service?
Yes, you can purchase the monthly subscription. https://www.acrobat.com/formscentral/en/pricing/pricing-b.html, you may want to select the "Trial" option which gives you the first 30-day trial free of charge, and then $14.99 per month.