Hi. Thanks for your feedback.
1. Normally, smallest map should work, its size should be 32 x 24. I'll check it.
2. I'll check this bug too
3. and 4. If you want to see more information about a building, there is a blue question button. Is it what you are looking for ?
5. I already fixed some missing translations, but I can send you the file used in the game. Contact me at email@example.com. Thanks again