Looking at the system requirements for dolphin, I don’t think you’ll be able to use it here. Specifically, you can change php.ini, you don’t have CLI access, and non-web ports are not open on free hosting.
Most PHP settings cannot be changed on free hosting, including allow_url_include. However, the allow_url_include setting is already set to off by default, and cannot be enabled. So I don’t know why your software thinks that this setting is enabled, because it isn’t.
Premium hosting has more PHP controls. However, if you want full, unrestricted php.ini control, you’ll need to get your own server, because this is not possible on web hosting.