I mean if all the pos system is in spanish and if I can edit and print the receipts 100% in spanish
I also want to know if dashboard and product reports are included in basic plan
Here is a quick link that I thought might help you with doing some translation within your store.
Hope this helps a bit.
If your iPad is set to Spanish locale, your receipt printouts will also be in Spanish. The payment methods should be listed in Spanish too.
The Basic plan includes the dashboard, but the advanced reports are available only in Professional and up.