One thing we noticed during the launch is some small transactions (less than 0.01) went unconfirmed. This was expected as the bitcoin protocol requires a transaction fee if you are sending any tiny amounts.
This wasn’t clear in the user interface though. So yesterday we added some small checks that give you a little warning if you’re sending a small amount that will never get confirmed, and provide you an option to include a transaction fee if you wish.
We also had some daily send/request limits in place (while we’re in beta) that weren’t entirely clear. These should be more clear in the UI now.
Some small changes, but hope they help!