URL issues in social auth between Expo Frontend and Elysia Backend

export const auth = createAuthClient({
    baseURL: API_URL, // backend api url (on port 3000)
    // could potentially change above to frontend url, but that's not where the auth server is, since I'm connected to an elysia backend
    plugins: [
        expoClient({
            scheme: "myapp",
            storagePrefix: "myapp",
            storage: SecureStore,
        }),
    ],
});

// ....

export async function signInSocial() {
    await auth.signIn.social({
        provider: "github",
        callbackURL: "/test", // redirects to API_URL/test on web (docs say it changes to app url when running in native)
    });
}