Rated 5 out of 5 stars

Developer was incorrect to assume I was not using the latest version.
I am, and it does nothing.

EDIT:
The latest DEV version, yet to be released will be working fine.
Thanks to a responsive and caring developer.

This review is for a previous version of the add-on (3.0.0).  This user has a previous review of this add-on.

Edit: Could you provide insights into error info on GitHub?

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Hi Bryan, It's Good to know you're using the latest version. Before I responded, I double-checked TB v128 with RWH v3 to ensure the add-on was functioning properly.
Can you provide your details, like any errors or options settings in the GitHub issue?
Screenshots would be better.

https://github.com/jeevatkm/ReplyWithHeaderMozilla/issues