I have configured a Blueprint. But records have not entered the process even though they meet the Blueprint criteria. Why?
A Blueprint is disabled by default. Make sure that it is enabled.
A Blueprint could be created for specific layouts. Verify if the record in question belongs to the layout specified in the Blueprint settings.
If your Blueprint entry criteria contains an unused State in the Blueprint, the record would have entered the process, but transitions will not be shown for that record, as the State is not even part of the Blueprint.