HA Setup - Active Passive

Ok everyone, I am trying to get back to our HA setup and have a few questions. We have 2 X XGS3100's, the Primary unit is active and currently registered and subscribed. I fired up the second 3100 today...
HA active-passive preferred primary device

Documentation says for HA active-passive you should select a preferred primary device, because " only the initial primary device holds the licenses and supports services, such as FastPath offloading. ...
XG210 upgrade to XGS2100 in HA active-passive configuration

I have a current setup with a pair of XG210 in HA Active-Passive mode and am preparing to upgrade them to XGS2100 in the same HA configuration. I have a configuration backup from the active XG210 and have...
v21 HA Active passive - Aux node fails - system startup failed - fault state

I have a HA cluster where it happens now second time that the Aux node was not able to join the cluster or went into fault state after a time of Primary node being down. First it happened while HA initial...
"Switch to passive device" CLI command

Greetings, I want to set my Auxiliary device as Primary because I cannot access the web interface of my Primary device. Is there a CLI code for the button I marked in the picture below? Thank...