Unfortunately, I had to quit using Beeper a few days ago. Ever since they migrated to their new hungryserv, iMessage reliability has gotten steadily worse and worse. It culminated in an entire day of sending iMessages where Beeper gave them all a delivered checkmark... But none of them actually reached their recipients. Was fun explaining to people who were angry I hadn't messaged them back in over a day... I'm back on BlueBubbles now, hopefully it will be more reliable. Overall it's a shame because I'm really rooting for Beeper to succeed. I'm sick of all the existing chat providers.