Actually I do use load_plugin_textdomain (line 185/187 of cyan-backup.php).
translations into other languages does not work!
While the function call is there, no one has translated the plugin to any other language yet.
I tried to make the translation into Russian and Ukrainian, but the function doesn’t work!
Did you compile the .po files in to .mo files?
Under their support area:
Hint: Because sometimes the question appears, that plugins or themes doesn’t get detected as translatable, this often caused be the fact, that they use variables as textdomain specifier. If the author would have been using constants, the parser would be able to find them.
CYAN Backup uses a variable for the textdomain so it doesn’t look like that plugin will work with CYAN backup.
However if you have to po/mo files you should be able to place them in the plugin directory’s language directory and it should work.
If you send them to me I can add them to the plugin as well.
The other day will be time to prepare the files and then hand it to You!