Only conditionally Africa-ready

I bought the adapter for a trip to Botswana / Africa and am not really convinced.
Locally, I realized that there namely the variant "British Standard" or three-prong plug is installed, the 3-pole adapter for but not seen in years. I had to take every time one of the two-pin plug and unlock the third pole of the socket (fuse) by hand. Non-hazardous and fiddly. But after this part worked flawlessly.
Nevertheless stupid, because the advertising text says "world" and the adapter for Commonwealth and Africa is provided.
The bag for the device is good and useful.