Thanks for your post, it has caused our attention.
Our forum is Discourse based forums. However, we have changed the original forum structure, this may be the reason why you can't find us on Discourse app.
If we need to re-access Discourse APP, we may need to abandon some of our customized pages, such as Powerdraw page.
But we will contact Discourse team to find if we still have possibility to access the APP.
I hope we can finally find the solution.