Hello ! Kinda lost on wich one should i get, for the same price, either a nice DS lite or a sound problem 2ds, help me

Hi all,

As the title suggests, i recently bought an eshop code from a reputable retailers but get this error code when i try to redeem? I checked on nintendo website and it says its linked to their system being down for maintenance?

If it helps, i only bought the e-code a 30 mins ago, maybe it hasnt activated or synced? and im based in the UK. Thanks