Trying to add new DHCP Cluster to IPAM and not sure of credentials needed

We are in the process of setting up a new DHCP cluster and I am trying to get IPAM connected to the new nodes but I cannot get past the credentials to use for monitoring. 

Initially I setup a domain service account to use for this and granted to local admin rights to the DHCP nodes and tried to add the node to IPAM and that did not work. I changed how the credentials looked in Solarwinds and I received the error "The Security database on the server does not have a computer account for this workstation trust relationship".  So I looked at the existing setup and found an article that the service account needs to be a local account on each DHCP server.  I setup a local account and tried to connect and now it is saying bad user name/password. 

I have been using this - and the PDF admin guide

Then I found this and figured it would work and no go -

These are all running Server 2019 and it is configured as a DHCP Cluster.