Sadly for you
@Adam ********
you lost that visa application fee
The online eVisa system has no recourse if you didn't check the data that was captured or that you input to make sure it was 100% right before you paid,
Unfortunately there is no get the money back or credit so you can apply another time without paying. đ
Many MANY people on this group (and other thai related groups) have posted how they didn't notice a mistake had their application cancelled and then had to apply all over again and pay again