To prevent spam abuse on the platform our team has implemented a CAPTCHA requirement for adding external donations. External or Outside Donations allow you to add offline card or check donations to your Campaign or Donation Page records. You will find this tab in the Campaign Management area.
How to Add Outside or External Donations
If a user adds a bunch of external donations in a row it will trigger the CAPTCHA. We recommend users enter external donations more slowly or not as many at a time.
Unfortunately, there is no way to override this at this time.