Tax calculations and no email notifications

[Kelvyn]

I've got the checkout button showing, I can place an order, I can see the order in the checkout.

Only 2 issues remain now:

1: Neither ourselves nor the customer get notified of a new order, even though "Also send notifications with Zencart" is set to true, and we get notifications from Paypal orders.

2: Whatever I do with tax, be it in Zen or in Google Checkout itself, in the order it shows tax as 0%, although the grand total is correct.

If I edit the order, I can apply the 20% tax, then when I refresh the order it's OK.

However, when I change the line "Shipping Tax Rate (Not Stored in DB)" to 20%, it DOESN'T remember this.

Has anyone got any ideas? Thank you!