Is there some way to link Tuya Smart to Ewelink web in order to create a wall dash board ???…….
No, unless the TUYA device is Zigbee protocol bridged by eWeLink supported bridge, those wifi devices are not works with eWeLink.
That means if I do the installation of a the ZigBee gateway hub , could allow me to discover all my sensors, cameras, lights and switches installed at home ??? Thank you and best regards !!!
No. You have to use a personal hub, id ihost running iobroker.