Hello there! I'm a newbie here, but I have a great love for Arduino and smart devices. I have tried a lot of types of devices using the same app (smart life) and tuya cloud. Officials say there are more than 200,000 SKUs; well I think they are quite cheap and widely distributed. However, it is hard to connect Arduino with Tuya cloud.
The Arduino support team answered my question and provided the support and demos. To make a long story short, the steps they gave me might be helpful for you: