* If I understood the problem correctly when you tried restoring on node-3, node-1 and node-2 didn't had any active workload so they should have replicated things directly from node-3 but they raised certification failure. This is bit weird and need more investigation.
* Can you share log files and configuration file.
* If possible can you try to reproduce this on smaller scale w/o production data and hand over the said steps.
* If I understood the problem correctly when you tried restoring on node-3, node-1 and node-2 didn't had any active workload so they should have replicated things directly from node-3 but they raised certification failure. This is bit weird and need more investigation.
* Can you share log files and configuration file.
* If possible can you try to reproduce this on smaller scale w/o production data and hand over the said steps.