Sql failover cluster issue with different edition setup ( enterprise with standard)
to solve the issue do an edition upgrade of sql server on the node 2.
https://docs.microsoft.com/en-us/sql/database-engine/install-windows/upgrade-to-a-different-edition-of-sql-server-setup?view=sql-server-2017
It should not even require the service to be stopped.
At the end you have to restart the node 2