iOS dialogs don't work

Hi. Thank you for making this awesome library, but I'm afraid, the dialogs don't show up on iOS.

Please let me know if there's any information you need in order to debug this.
This is a showstopper for us, as we depend on dialogs to show up to show important error messages and other details.
Once again, I appreciate your hard-work and your support.

Regards,
Sairam.