Nonsense Diamond Key (apparently) going out of boundaries

So, I got Nonsense Diamond, and I was prompt with a key.

No big deal creators need the money.

So I press retrieve key, and it took me to a Linkvertise website. 

However, it didn't say that it was a Nonsense Diamond key, it said it was a proxo key.

All of that was how you get the Proxo key, not the Nonsense Diamond key.

So I type the key I got into Nonsense Diamond and press submit key, 

Then it says. Key goes out of boundaries, which i assume means it's too long.

Does anyone know how to fix this issue?