Best solution if really worried is still going to be to use Solar Assistant assuming it will support it. That won't help though for the distributors who would want to look at settings and help configure or troubleshoot any issues. Even if the servers are physically in the USA I'm not sure how much difference it makes if they are directly maintained from China. I was hoping there would be clearer explanation of who controls what with regard to data especially if they are requiring personally identifiable information in order to register an account.