It is likely because the bank doesn’t know what checkbooks you own and use, and has no way to know it. You could have ordered more third-party checks (legal, no

It is likely because the bank doesn’t know what checkbooks you own and use, and has no way to know it. You could have ordered more third-party checks (legal, not fabricated), and if you do, commonly you would use a different sequence starting point for those, so that you can distinguish which checkbook you used. More commonly the case for businesses but you can buy them from Intuit for example: https://intuitmarket.intuit.com/checks https://intuitmarket.intuit.com/checks