Cura 4.12.1 - I just tried adding the 5axes Import Export CSV Profiles plugin. I am not seeing it. Looked under Extension, in the Profile Manager, the File menu, tried exporting a profile, tried saving the project. Not seeing any .csv options. Also tried reinstalling Cura, multiple Cura restarts, toggling the state of the plugin in the MartketPlace.
I'm sure I am missing something that should be obvious to me ...
https://marketplace.ultimaker.com/app/cura/plugins/5axes/ImportExportProfiles?action=addToCura