Xbee Zigbee broadcasting problem

Hello, I have 2 Xbee Zigbee 2mW S2 connected to 2 Arduinos. I have configured the Addresses to both of them and I have managed to send messages (point-to-point) just fine. However when I use a third Arduino connected to a third Xbee Zigbee and I try to send from the other 2 Zigbees to the 3rd (using DH Destination Address High: 0, DL Destination Address Low: FFFF) the messages come corrupted in the 3rd Xbee, or half sentences and then comes the other half.

What is happening?