If you want to test SNAPSHOT build, you can download it from here.
Follow this tutorial to upgrade from old version.
The question is about groups scenarios
Correct way RSSI display in current version
Unique index or primary key violation: "CONSTRAINT_4B_INDEX_4 ON PUBLIC.METRICS_DOUBLE_TYPE_DEVICE
Forward payload list too short
how to change the built-in MQTT broker to use SSL?
Strange routing and sensor assignments
SSL real Certeficate ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Exporting and downloading data.