Several members complained about being limited after receiving unfair low ratings.
So, I removed the limitation when a member has one negative rating (1 or 2 stars) in the last 10 exchanges.
If a member has 1 negative rating in the last 10 exchanges, a warning message will be displayed in the "Send stamps" page but there wont be a limitation on the maximum travelling letters.
For 2 negative ratings, sending new letters will be suspended.
The ratings can be changed if you contact your partner and find a solution to improve your previous exchange. Maybe a partial resend. After the ratings are updated, the limitation will be cancelled.