Encountered a glitch which hopefully doesn't delay things too much if at all. Custom order placed August 4 and initially set for delivery August 19-21. Credit card charged August 8. Yesterday morning I get notification from Amex that they declined a charge for my protection. I check the order and it's on hold because the credit card couldn't be authorized? I call and speak with a rep at Apple, she looks at the order and sees that they already took my money the first time back on the 8th. The system glitched somehow and they tried to "over-authorize" for the amount again. Apologized profusely but there wasn't anything she could do on her end, she had to escalate it to the "payments team" and the issue could take 4-5 business days to resolve but probably less as she said there wasn't a charge to actually reverse, they would just need to erase the second attempt or something.
Thankfully though, I log in this morning and the order looks back to normal. No references to needing a credit card or payment needed, and the progress bar which was ghosted out during this nonsense is now back to being filled with green up to Processing. Back to showing a delivery date still of the original August 19-21. Looks like their payments team corrected the problem.
No idea what happened, and the rep didn't know either. Totally bizarre. I just want my shiny new iMac within the timeframe they promised!