OK guys, I found the workaround to enjoy the IgnoreBoards functionality in other languages too
The issue is actually with Language files and unfortunately the strings used in Ignore Boards are not available, so here is the temporary solution to the problem:
Please get your user id from your profile, for example mine is 4.
Now use this url:
is your user id in this forum.
The link will take you to the IgnoreBoards Preferences page.
Hope this helps.
So enjoy the facility.