Model is based on original model, but with day labels added as modifiers to lid. Currently there are CZ and EN labels in print profiles, but you should be able to easily change them by changing types of modifiers back to “part” by going to “Objects” → Right click on required text_shape → Change Type → “Part” → Right click → “Edit Text” → Change type back to modifier.
You can print box and lid together and it should require only two changes of filament (depending on layer height).