If you're migrating from 9 to 10 (you should be on 11 as that is the latest version), you can follow the migration guides below:
Regarding the default style (I'm assuming this is what they're meaning by the "default menu") is showing up, you're likely not changing the style in your project. That is, you've not set it up in the styles resources.
Like this (attributes and example included):
Please correct me if this is not the case.
Regarding the "ghost messages", there are no images attached so its hard to understand what you mean. Can you re-attach them so we can look into it?
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