Hello,

Words can be changed using POEDIT for example very easily. 

If you want to use POEDIT then this is an instruction:

1. Download the Amelia plugin from CodeCanyon and save the .zip file on your computer.

2. Unzip the downloaded .zip file.

3. You need to download and install POEDIT. 

4. After that open the program and open the file from the extracted folder on your computer ameliabooking/languages/fr_FR/wpamelia-fr_FR.po.

5. Translate all the strings that are not translated

6. Save the translation.

7. Go to ameliabooking/languages/fr_FR/ folder and copy these two files called wpamelia-fr_FR.po and wpamelia-fr_FR.mo back to your website in the location ../wp-content/plugins/ameliabooking/languages/fr_FR/.

This is an example of the French language, but you will choose yours.

Hope this helps. 

Hello,

It seems the issue you're encountering arises from the fact that the "Russian" language was set as the default language, and the settings for additional languages do not allow the default language to be set as one of the available ones. To resolve this, you might want to verify that Russian is enabled as an additional language, not as the default.

Let me know if you'd like further assistance or if you'd prefer to provide a temporary account for a closer look.