ECC algo and issue prevention question

I am new at this and just making sure I am not locking myself out or creating a problem for myself.

I generated a gpg key with the following options: ECC and ECC, Curve 25519

I added this to my Librem Key.

After this, looking at the supported features, I do not see Curve 25519 listed.

Have I made a mistake doing this?

My hopes are to use the smartcard-key-luks scipt to use the key to decrypt the LUKS partition. This currently fails, but thought I would start with this.

If I have done something wrong a back-out process would be very helpful.

Thanks for any help or advice.