RJDemetra is unreliable package

Thanks for providing code. Could you kindly take further steps to make it easier for other forum users to help you? Share some representative data and that will enable your code to run and show the problematic behaviour. And include any error messages you receive.

How do I share data for a reprex?

You might use tools such as the library datapasta, or the base function dput() to share a portion of data in code form, i.e. that can be copied from forum and pasted to R session.

Reprex Guide