subscription payment keeps looping back to the payment process after paypal payment is taken

Everytime i create a new member then make a Paypal payment via a subscription, it takes the payment then it returns me to my website, then when i click on add new listing it just takes me through the payment process again.

here the steps i take:

if i select one time payment the steps go:

step 1 of 3 = select one time payment

step 2 of 3 = select paypal

you are then transfered to paypal, upon payment you are transfered back to:

Step 3 of 3 : confirm payment

List your item in the directory

BUT

if i select subscription payment the steps go:

step 1 of 3 = select one time payment

step 2 of 3 = select paypal

Step 3 of 3 : confirm payment

you are then transfered to paypal, upon payment you are transfered back to the beginning of the taking pament loop.

You are not been transfered to paypal after step 2 which should happen, then you would be able to confirm payment (step 3 ) and list your directory.

thanks in advance.