Well my Emunand is 10.3.0-28 and it still doesnt work. A lot of people on the thread I got the cia are saying it doesnt work for them but theres still ppl saying it works for them after redownloading from eshop so im pretty sure the CIA is broken.
Possibly, or it could use newer antipiracy checks/be out of your region.
I'd suggest trying to boot it with
bootntr/ntrcfw which is suppose to help pass region and newer checks.
More stubborn games that ntr alone doesn't work for (unedited dumps of Majora's Mask or Paper Jam Bros. for example) often respond well to
ntr's language plugin.
Alternatively you could try a different version of the file.
Edit: If it's a legit file from your region and you installed it, you should be able to delete it and visit that particular game's eshop's page to redownload it, as installing the legit cia in the first place should have given your system the ticket it needs to redownload it on the eshop.
This only applies to legit cias and doesn't seem to work reliably, but it is one method.
Edit: So I looked for the "legit" dump of this game, and there's an obvious note right by the download link.
(You need to access eshop at least once after installing this game or install update 2.0 if it didn't work, and at least firmware 9.8 for it to start.)
If you're 3ds is not Eur region like this legit cia is, then I don't think you can bypass the crypto measure by connecting to the eshop or with a FW spoofer.
You might get it to launch with a FWspoofer after updating to 2.0 as they mention, but it'd probably be smarter to look for a version that's not legit.
I mean you have and are installing it to emunand anyway, there's no reason to restrict yourself to a noncryptofixed nonfwspooofed version.