Sorry for the slow reply, I was meaning to look into this and find out how it’s done but haven’t had time. I’ve not actually translated any plugins myself so I’m not sure what problems you might encounter.
There’s a guide here which might help? https://premium.wpmudev.org/blog/how-to-translate-a-wordpress-plugin/
Sorry, I can’t be of more help,
I’ve tried to follow the guide in the link but translation doesen’t work… Maybe there is some issue in the translation strings? I’m not so expert on this :=)
It’s possible some of the translation strings are out of date. They should mostly be up to date though I think. I’ll regenerate them now.
This would explain some strings translating but not others. Is that what you’re seeing? A mix of your language and english? Or are you just seeing everything in English?
I’ve translate only Search in the button and it’s still in english