proconnect fee for tax planning

[BingluCPA]

Hi I am purchasing credit for tax returns on proconnect. 

If I am only doing tax planning, not going to file this return, do I still need to pay to see the pdf? 

If I did not file this return, can the credit I paid to apply to the next return or I have to delete it from proconnect, then it will not count?

Thanks,

Bing