A common reason for a card decline is that you have attempted to surpass your daily/monthly spending limits. Please make sure the charges that settled on (a) specific date(s) do not surpass your account’s limits. If they did and your company is scaling beyond your limits, you may need to request a new limit.
To learn how to request a credit limit increase, please read this article:
How to Request a Limit Increase for My Account?
Otherwise, please attempt the charge after the 24hr have passed so that your limit will not cause a decline.
If this doesn’t apply to you, please view this general page for declines: What If My Card Declines? – dashfi (zendesk.com)