Update 2024-08-20 I was contacted by an On Tap representative stating they couldn’t fund the CD with $4k, since their cap was $1000, even though the cap was removed from the application process and they let me type in $4k.
So I signed up for On Tap Checking back in early July. I CC funded that with $1,000 as that was the max I could fund it at the time. I screen record all my bank account applications, so below is a screenshot of my initial app for the On Tap Checking account, which shows the $1k cap. I funded the checking account with my Citi SP.