Please note that it takes a few minutes for Zyte Smart Proxy Manager(formerly Crawlera) instance to be provisioned once payment has been made. 

When the Smart Proxy Manager instance is being provisioned, you can see the tag "Provisioning" here:

When provisioning is complete, you can find the API key and setup instructions at:

If the instance is not provisioned after 15 minutes, please contact Support team through DASHBOARD > Contact Support in the Left Sidebar.