Hi lautaorozco ,
Welcome to the forums! 🥳
I've tested using the WhatsApp button action on Firefox on both mobile ( Android and IOS ) and desktop ( Windows 10 ) and it seems to work correctly.
Could you perhaps let us know which device and OS you are using to test this?
We would like to reproduce this issue so that we could fix it. 😄
Is it also perhaps giving you an error message when you access the api.whatsapp?
Please let us know!