Thanks for such a fast response! I'm using Retro Virtual Machine, emulating an Amstrad 664 (I said 6128, but it was my mistake).
After I checked again with an Amstrad 6128, it works fine. The issue was (again) between the screen and the chair :-D
I'm not a fan of horror games, but I must admit that I've enjoyed the game, the graphics and the easy going story. A small beautiful game that works perfectly as introduction to adventures for novel players.
Despite I appreciate and understand why the pixel-like fonts are used, I wonder if could be possible to change them on the browser version (as an option, perhaps) to help players that start having difficulties to read some fonts :-)