I think you missed some of the most important parts of @KangJL’s message, which is the link to this article:
We have security systems in place that make sure that websites hosted with us can only be accessed by browsers. Any other kind of access is not possible, with the very first example in the list being:
Access through Android or iOS mobile apps (mobile browsers work fine).
So if your project requires communication with a mobile app, I’m sorry to say that you will not be able to host it here.