Re-joining Cluster

I removed a member from a cluster, rebuilt the node entirely and now I can’t get it to re-join the cluster. I’m using the cert on the remaining cluster members. The member I removed used to be the database master. Not sure if that matters. But now I’m getting this error:
Failed to setup cluster trust: Failed to add server cert to cluster: not authorized

I’m bootstrapping this member like I did before with the existing cluster cert.

It’s running the same version as the rest of the servers in the cluster?

Both are version 5.5