The Reformed League of Democratic Nations was a try by Czechoslovakia to reform the Allies during the Cold War with China. Wasn't that successful and only consisted of Czechoslovakia, Turkey and the Republic of Murmansk. This might've been a cause of couple reasons, possibly Czechoslovakia asking people to join personally and only having asked Turkey and Murmansk. Another possibility is people not bothering to join, they were already a part of Allies, but this is unlikely since nobody sided with China in the Cold War.