I've got 6 Tenda smart plugs with 4 purchased a year ago and 2 recently. Originally the ones purchased a year ago could be controlled via google home and smart speaker but that stopped working a few months ago. I could not get them to work again despite unlinking them and deleting/resetting the plugs. Interestingly the 2 recently purchased are controllable through google home with the on/off link present next to the plug icon. The older plugs do not have the link.
Can someone suggest how I can get the older plugs to work with google home. There is no new firmware available. Any help would be greatly appreciated!!