Hi, I'm fairly new to making dnd content online and I struggle to add spells to my subrace.

I designed a Sand Genasi who have a racial traits called Gift of the dunes ; it give the cantrip Magic Stone and at 3rd character lvl, the Dust devil spell. I did everything, giving description and all, but when I try to creat a character with it, it doesn't show the spells on the spells list.

I know I must save the overall subrace for thing to actually appear, I did it earlier for the Dex bonus, but i can't do it for the spells, don't know how to. Any help or other topic i couldn't find ?

You don’t need to fill out most of those fields and dropdowns, in fact it’s better if you don’t. What probably happened is some combination of fields you filled out is conflicting with each other. Please see the Homebrew Subclasses & Species FAQ #14 for a walkthrough on how to add known spells to your race/species: (https://www.dndbeyond.com/forums/dungeons-dragons-discussion/homebrew-house-rules/131411-a-homebrewers-how-to-faq). If you still need help, post again and I’ll do my best for you.

I think it'll be enought, thanks ! I couldn't find this while I was searching in the first place

Happy to help.