This has been a common error way back to the s-1 sales. After a few hours they should have it fixed.
I have had them fix it for me on s-1's s-3's s-5's and hopefully in a little bit on s-7's.
I want more and now must wait for the first one to clear.
I have same problem on two separate orders placed earlier today. Both are confirmed on blockchain yet order is expired on bitmaintech.