This is ultra-weird. I had to enable the sensors in the devices dashboard of HA. I went to settings → devices and services → chose the “devices” tab → search for the/my Gosund smart plug. In the middle row, there was a button like “show hidden sensors”. I clicked it, a list expanded, consisting of current, power, voltage. I clicked on each, a popup showed and said “this entity is disabled. activate?” I clicked “yes”, HA said I should wait like 30 seconds, then it appeared on the dashboard.
No need for Tamota.
Next, I’ll try to get the overall consumption into the dashboard, like shown here: Added Tuya smart plugs - where is the energy monitoring? - #10 by Tobse