I’ve set up your plugin, and it has been great so far.
My only problem is that I’m using PolyLang, and 2 strings cannot be found and translated with PolyLang (or LocoTranslate neither).
Can you please check now? I cleared the cache programmatically to see if that helped.
In case you change those texts on the plugin back-end, please trigger a live search on the front-end with phrases that yield no results and keyword suggestions (ex.: “asddasd” and “test”) as well, so the database updates on polylang as well.