It appears that the service man who has re-installed the fixed webcam has moved the internal focus setting of the webcam lens. This focus setting was calibrated in the factory...
Now the lens has to be manually refocused, and that is not so easy as it looks.
I have sent instructions on how to do it to Sfakia, both for the manual operation, and for the digital finetuning of the focus. A helper prgram has to be downloaded, and installed, and executed. This is an English language program. But it has to run on a Russian language laptop, running Windows in Greek. So, finding the right menu items to click on is complicated.
I think at least for today they have given it up in Sfakia, after half a day's struggle.
All the best,