I provided my payment information & it keeps telling me that I can’t use an expiration date that’s from the past

Not sure when I enter my credit card it says the expiration date is in the past Why does it keep saying that I’ve entered an expired date when I’ve entered 09/26?

I provided my payment information & it keeps telling me that I can’t use an expiration date that’s from the past. The # is not from the past.

[Re-Titled by Moderator]