I have 2 questions concerning translation. I'm using h5p in wp plugin.
1) To create h5p-content with french interface I switched the site default language to French. Then I switched back to English but I still have French interface while editing h5p-content.
2) I changed one of the fr.json file content and see no any reaction. I still get the same label as it was initially. I tried to deactivate and activate plugin, switch site default language. Nothing helps. How can I activate new fr.json file content?