You can “Remove Device” from your “Gosund” APP, then re-add it with the “Tuya Smart” APP.
Then, Link it to Home Assistant with the Tuya Integration.
Worked well with my 3 port Power strip 
P.S. It seems a lot of these cheap rebrands from china on amazon, might be using Tuya on the backend.
This works for me too, but I don’t want to use the cloud.
I have forbidden the sockets in my router to connect to the Internet.
(just seeing your Feb 2021 reply – oops)
As I noted above, I did a Tuya-convert, and my Tuya circular single-plug controllers (Gosund, in my case) are working find without the cloud (a few years later, even)