Issue
Your app is live and you want to send push messages to your customers. Unexpectedly, it doesn't respond when you tap on the user icon when creating a new message in JMango360 App Dashboard.
Cause
This is caused by the JMango360 plugin versions: 4.0.0, 4.0.1, 4.0.2, 4.0.3. These plugin versions don't work with the custom theme settled in the Default Config scope in Magento Admin.
Solution
Please upgrade the plugin to version 4.0.4 or higher. For details, please refer to
Upgrade Magento 1 plugin. If you don't want to upgrade the plugin, you can configure theme settings in Magento Admin.
Step 1: Go to Mangento Admin > System > Configuration > General > Design.
Step 2: For the Default Config scope, remove your custom theme created in Themes > Skin (Images / CSS).
Step 3: For the Main Website scope, re-enter your custom theme.
Step 4: Save changes to finish.