Are your cordless blinds not retracting like they are supposed to? If your blinds will extend when pulled down but not retract when pushed upward, the string that runs through the blinds has likely fallen off of the pulley within the top housing. Do not worry though, as there is way to solve this. Here is aThis guide towill help you fix this pesky annoyance.
Conclusion
To reassemble your device, follow these instructions in reverse order.