Hello sir. I have read your post and sure I can do it.
I ve been working in part of coding and software developing for over 8 years.
I 've much experiences in Paypal and Stripe and PHP, curl, Third party api.
I have done projects for IPN and Donate, and
I can show you my projects I have done.
Then you can trust me and ping me.
Please let us contact and make a good friendship.
if you hire me, you will get the best result.
Thanks.