Our sales are going well, but, just like Exodus, there can be traffic jams, and we need to actively control the flow.
We need to slow down the queue at times to allow transactions to process.
Keep your place in line (i.e. don't start another window) even if the queue is not moving.
If you get the message "your order may have been processed":
wait 5 min, check your email for a confirmation and if there's nothing there, retry.
Hang in there, and think about "patience" as the 11th principle :)