Hi @AdrianaVeludo
Welcome to the ODK forum. We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a picture as your avatar because it helps build community!
by that you mean it's gone like not visible at all or it is visible but unchecked?
Could you attach your form?
Please also tell us what version of ODK Collect you are using.