Whats the limitations of Linerate starter edition?

Hi Steve, the starter edition does not allow High Availability configuration and limits performance (throughput to 5 Mbps and total connections per second to a low number). More details can be found here, including a comparison of other tiers that may better suit your needs: https://linerate.f5.com/try

Some additional information about how the system behaves when limits are reached can be found here in the docs: About Licensing: Rate Limits