Hi! For Edo Tensei Treasure, Second Super Rare should not be the same as the first, as long as the first Super Rare was also pulled from Edo Tensei Treasure. Keep in mind that there have been other ways to obtain him, so if you did obtain him from other means, that does not count as a Super Rare from Edo Tensei Treasure.

If you believe there is an issue though, the right place to report this would be through bug/support section found here or Customer Service found here.