isaac,

I have spoken to PayPal and they have advised me that it would have to be with the code on my forum which is causing the issue. They have advised that subscriotions are not accepted by paypal but donations are. Would a code be available to class it as a donation to work around the issue.

This is what was sent to me from PayPal:
It was a pleasure speaking with you and I am so sorry I was not able to resolve this issue.
As suggested, please reach out to www.paypal.com/mts for further assistance.
It appears it can be done with a developer and API credentials.

Thank you for choosing PayPal.

I have attached images so that you can see what is happening when I try to subscribe through the forum.

We have an online store and the setup works quite well and the clients have the option that you showed me in your post but not on the forum side.
Attachments
screenshot-www.paypal.com 2017-08-14 12-56-43.png screenshot-www.paypal.com 2017-08-14 12-57-34.png