Auto update key doesn't work and exchange rates aren't updated

Hello,

we have problem with WooCommerce Multi Currency.

Autoupdate key not working – I have added auto update key from your site, but it doesn’t work. It still says invalid – can you check?

Exchange rates are all zero – system now set exchanges rate all to zero, I cannot change them neither they update (I have tried default provider, google and yahoo without success).

Thank you for your support.