The website's certificate is legitimate (
www.namanzoor.com). The domain name was registered recently (14th of April). The website seems to be hosted at Sonassi / Iomart Hosting, and the domain name was registered by "Mesh Digital Ltd" with description: "Mesh Digital Ltd. provides web hosting services. The Company develops search engine optimization, back-end software, and technology for domain name registration for retail, wholesale, national, and worldwide customers"
It appears whoever is responsible at PTI for the IT infrastructure/communications has outsourced the implementation and maintenance of this donation portal/website to a 3rd party integrator.