1/2 of our Stimulus has been taken

No, neither of us owe any kind of child support, we received our full refund this past (and every) year just fine. Both of our kids live with us. The only kind of debt either of us has are that I have defaulted student loans; but we file an 8379 every year, so that isn't taken either (plus I'm aware that they aren't supposed to take Stimulus for student loans). Has anyone heard of anyone else having this happen? And it was EXACTLY half. I got the message from Green Dot this morning that $1450 would be deposited; we should have received $2900 (2 adults, + 2 kids, with one of them not counting towards this credit because he's 17). And yes, we filed jointly, so both stimulus payments should have been together.