Test-drives aren't typically all-inclusive for data security reasons, so your test-drive might not show certain data.
In short, the reason you'll see a "subscription changes needed" message is that your current setup doesn't include certain states, data, project types, or another category. Once you've signed onto a subscription plan, everything included in that plan will be available to you.
For more information, please don't hesitate to contact your account representative or call us at 866-316-5300.