You can open your
save file with a text editor to change your zoom level manually. Make sure to create a backup copy of your save files first, though, in case something goes wrong. After opening it with the text editor, look for the "<zoomLevel>0.75</zoomLevel>" setting, change whatever number is in the middle to 1, and then save. That should reset the zoom level. Also, please keep your posts in English to follow the forum rules.