Purchase Order Validation

Hi,

We have sent a mail to email address in contact us for license cost of subscription edition a few days back, but have not received any response. Any idea who can provide us this information?

Regards

After I try to import Purchase Order Validation (BPMN process diagram) i recieve error "You are trying to import a process who has been designed with an incompatible version". Where to find compatible version of diagram and how to know with which version are compatible? Thank You.