but apparently this config doesn't do anything. I can't select a range. Can you check and tell me a workaround or where is the error so I can quickly fix it ?
The downside is that the DateField widget does not support showing range of dates. We have a feature request: https://github.com/bryntum/support/issues/1888 Please subscribed to the ticket to get notified when it's done. If you need it faster and you need our help to implement it, please consider professional services. https://www.bryntum.com/services/