Paypal is already integrated but will not show after submit

Can I have different forms with paypal integrated?

If so, i used a template and when people press submit to buy the product, paypal won't appear.

Also when I try to insert a paypal option they say that it is already in the template and I should delete it before putting one new.

I'm not sure if i'm clear, hopefully yes :(

You are currently using our Purchase Order payment tool. You have to remove that and replace it with Paypal. 

To remove, simply edit your form and click "X" button in the Purchase Order:

You will be prompted to save the product items so you don't need to set them up again. Simply click "Yes" option.

Now, select Paypal from the list and drop it to your form:

I just fixed this in the given form. Just please follow the instructions if you are setting up your other forms.

Thanks