Switching SMA Solar Inverter Owners

I recently purchased a house which came with two SMA inverters. After some poking around, I logged into the Sunnyportal site and setup a new system. Upon attempting to add the inverters, it failed to find them and showed an error suggesting that the inverters may still be attached to someone else&rsquo;s account. The help portal is my.sma-service.com and various pieces of paperwork to prove…