Hi, are you using the "click-map" forecast? It does not support waves..., but if you are really trying to add a custom spot, wave forecasts are possible (if the location is covered by NWW3 data), when editing the spot you will see if it is covered and if so you can enable waves for that custom spot.
when I click near grenada offshore slightly it gives me everything I want but the sea state waves? some spot areas it works most others it does not. how can i get sea state or waves for my custom spot forecasts areas?