With two AIOs I believe the Gateway takes over management (e.g. of EPS) and several registers are automatically replicated from the Gateway to the AIOs so it all stays consistent. My problem is that the Android app in local control mode doesn't seem to understand this. For example, there is no EPS enable/disable for the Gateway, but there is one for each AIO - although I'm not sure it does anything as if I try to change it it says it's done it but it reverts to the previous setting. I can see that EPS is switched on by looking at inverter information (Gateway Inverter local control) on the cloud interface but it won't let me do anything further because I haven't subscribed to the premium software service (yet). Is my understanding of the situation correct and does anyone else have this problem (and/or any solutions)?