RP4VM 5.2 5.3 Upgrade issue

I'm on the last step of the upgrade.

1. In the RecoverPoint for VMs HTML5 plugin for vSphere Client, click System > Plugin Server
The RecoverPoint for VMs Plugin Server screen is displayed.

I'm not sure exactly where I'm supposed to be on in vCenter for that.  After choosing the upgrade to 5.3, I logged out, and restared both vsphere-ui and vsphere-client.  In /vsphere-client, I still see the RP4VM icon, but don't see "System".   In /ui, I don't see an RP4VM icon.  If I go to /UI Client Plug-Ins, I see both 5.2.2.2 and 5.3.0.0, but Deployment says incompatible "The plug-in only supports vSphere Web Client (Flash).

I'm on vCenter Appliance 6.7 Update 3j.