Wolfram cloud and typing short cut

I subscribed Wolfram Cloud just a few days ago, and now I trying to get used to it.

I’m using iPad pro(gen 2) with the smart keyboard for it, and access on the Cloud via Wolfram cloud app.

But I’m struggling with typing subscription, power, fraction and Greek letters etc as on desktop environment.

I cannot use, for example, “ctrl(cmd maybe on Mac?) + _” to write subscript, and “ctrl + /” to convert a input into fractional form.

Also the short cut for escape key on iPad(which is “control + [”) does not work on the app, and others seem not to be alternatives, too.

May I ask anyone to confirm whether those issue could be resolved on (iPad+cloud app) environment?
Should I wait for next update for it?

Thanks for reading.