It's not a problem, it's routine.
create an if value specific to this error. If there is an error, solve it yourself with external browser control.
I sent the amount requested, and everything said it was locked it. However btc was going pretty slow and it took an hour for the first confirmation. This resulted in a failed transaction claiming I didn't send enough btc. What are the next steps to complete the transaction? Is there a refund process so I can try again? Also how should I avoid this problem in the future?