Reverting to i3 issues.
After setting static IP to all secondary Shelly's for controlling lights and rollers and using a dedicated router working on DHCP mode for creating a dedicated stand alone internal network for the Shelly system, still i3 loses commands to the slave devices over http. It has spontaneous behaviour and derives lack of robustness.
On the contrary the app is very consistent.
Maybe instructions over http have bugs???
Advice from anyone with more experience or knowledge?