After Installation no login is working

Hi, I installed the solarwinds storage response time monitor on a VM (Win7) with VMware workstation. I want to monitor a vsphere 5.5 and 6.5 infrastruktur. With the credential of the vcsa (vsphere 6.5) I get an error. If I try to use the credentials root and password of a stand alone vsphere (6.5) host, I get unsupported namespace. Does storage response time monitor not work with newer VMware versions?