Laravel appstract Nova Signature not working

Hi. I'm not a rookie in developing but Laravel devloping just for one year and Laravel Nova just beginning. The fact is that I need to develop an app for a customer who needs the client to sign physically (with his finger of stylus from the mobile phone) accepting the conditions of the budgets. I've been struggling for two days with website novapackages.com/packages/appstract/nova-signature-field and I cannot see the "field" appearing with the rest of fields at /resources/products/new for example.

I get no error message that I can find or see; and the rest of the app keeps working fine. But the field NEVER appears. I am using it with a TEXT field (column). I also have been trying the website novapackages.com/packages/lab404/nova-signature with the same result. I CAN NOT see the field.

It is for sure my fault but any help will be greatly appreciated.

Tks folks in advance.

Using: use Appstract\NovaSignatureField\Signature; in the /nova/product.php resource file where fields are created.

and using this for the field: Signature::make('columnName'),

TKS.