thanks for the beta release, but it seems you forgot to release the agent as well. I tried the 2.1 agent, but it doesn't work with the new server.
And to be clear, Jopr 2.1 agents are incompatible with Jopr 2.2. You need to upgrade the agents (the inventory will not be lost, nor will the agent configuration - inventory is re-synced and configuration is persisted outside of the agent).
From here on out, Jopr agents are, by default, configured to auto-upgrade themselves. So you will only have to manually re-install the agent this time (assuming you allow the agent to auto-update itself, you can turn that off if you want).