Smart valves not syncing properly in ECO mode

I have the following setup:

• Thermostat with Relay1 + 3 Smart Valves

• Relay2 + 2 Smart Valves

In the Energy app, I’ve set the operating mode to ECO, so that the thermostat has full control over the heating.

The issue is that all 3 valves connected to Relay1 follow this configuration—meaning even if I set a temperature higher than the thermostat’s, the heating doesn’t start.

Unfortunately, this doesn’t happen with the valves connected to Relay2. There, as soon as the temperature doesn’t match the one set on the valves, the heating kicks in.

How can I fix this? Is it a bug?? Thanks