From the forum:
The problem was thatn it uses direct keys, like +^c, +^h etc. I had to change them to their scan equivalents (+^sc02e, +^sc023), because when I use the Russian keyboad, ahk seems not to send latin letters, so other locales except latin-based don't work properly.
Thus, if the AutoComplete is to continue developing, to make it more versatile, it is desireable to use scan codes rather than direct letters for hotkeys.