Hello, I cannot add MSSQL Monitor to my blank VM

WMI is working properly

I installed a fresh instance of MSSQL there

user = local user[admin] with assigned permissions in OpManager [which work because WMI works]

When trying to add a Monitor, an error appears, suggesting lack of permissions

Can I ask for a list where I would have to add a user to connect to OpManager?

PS: TCP for port 1433 is correct and the service monitor works