Finally I got banned and so I had so switch to official WhatsApp client. Is possible to import the Mitakuuluu chat history to the official app?
It doesn’t work to copy the file from:
/home/nemo/.local/share/harbour-mitakuuluu2/harbour-mitakuuluu2/database.db

To:
/home/nemo/android_storage/Whatsapp/Database
And rename it to “msgstore.db.crypt8”.

During the installing process WhatsApp recognize a chat history, but then there is an error during the importing process and nothing got imported.