If you want to test 2.0.4, please send an email to bugs@monal.im with the subject line “BETA: 2.0.4”. I want to make sure everyone who has had connection issues can use Monal.

In the body of the email you will have to include your device ID (UDID)

Locating a Unique Device ID with iTunes 7.7 or later
To do this, connect your device to your Mac and launch iTunes. In iTunes, select your device in the ‘Devices’ section and navigate to the Summary tab. Click on the Serial Number label to reveal the Identifier field and the 40 character UDID. Press Command+C to copy the UDID to your clipboard. (from Scott Means)

When you receive your beta, drag it into the Applications  folder in itunes and sync.  When you open Monal check about to make sure you have 2.0.4