red circle with line through it

I just became a member and put in the wrong account number to pay my tithing last month. This month I put in the correct number but when I go to check the box I agree at the bottom. It will not let me check the box it shows a red circle with a line through it. I do not know how to fix it or get past it. Please help, I would like to pay my tithing online.

I would begin by verifying that you have the correct bank routing number and account number. If the routing number is not recognized, you will not be able to verify it.

Also, make sure that you have a valid email address associated with your LDS Account.