Thursday nights is eBay's usual weekly maintenance time. I avoid the system between the hours of 1AM EST and 3AM EST as its usually very glitch.
This period can sometimes extend for several more hours so if you tried anything during those hours or a few after that's probably the cause for the glitch.
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AGED SUPER HIGH LIMIT ACCOUNTS: 10,000/$1,000,000 and 25,000/$500,000
Buyer account error 
