Can't generate Token signing certificate
You have logged in Zervicepoint and you are in Edit store as StoreAdministartor to generate certificates for the client web service and you can not generate Token Signing Certificate.
Check Event Viewer, Applications and Services Logs, Zervicepoint and check if your error message is something like "error the user profile is a temp profile". This is because the user account used to generate this certificate is the account that runs the Zervicepoint Application pool. If this account has a temporary profile, this does not work.
Log in with an administrator and delete the temp profile for the app-pool account. If that isn't allowed, open IIS and browse to ZervicePoint application pool. Right click and choose advanced settings. Browse to load user profile. Change that to false. Log off and login as administrator and delete the temp profile. Log off and login as app pool account and check that the profile is correct (not a temp profile). Do an IISreset.
Login to ZervicePoint and try to generate a Token signing certificate again. This time it should work.