SQL Server 2019 Cluster - 9 : Configuring Windows Server Failover Cluster

good day an experiencing problems adding gogate-node-2 on node 1 with cluster wizard its saying the node cannot be contacted, node is powered on and connected to the network

Nice video, I have one question. We have 3 nodes configured, 2 of which are in the primary datacenter and 1 in the disaster recovery datacenter. All of the systems are set up with Windows 2019 and SQL 2019, and the primary datacenter's DB is configured with synchronous data transfer while the DR is configured with asynchronous data transfer.
My issue is: Should we use Azure storage or where can we put the Witness server?

Great video man, best regards from Costa Rica