I just checked my series I savings bond account, the bond I purchased in May has 6.48% interest rate while the one in last December has 9.62%. Can TreasuryDirect make mistake? I tried to email/call them but they are too busy. Does it happen to anyone else?
Another question is why does the issue date always push back to the 1st of the month?
One more question, can we get a detailed statement? All I see is the total amount you have in the account.