I've played this pretty game 20 hours for 5 days and I can't stop, but I've got a big issue. Infinite pending. I loaded the previous avto-save and everything was good, but now nothing helps. Please, help me. I want to play more and more, but I can't continue

Try dismissing all of your notifications, particularly the ones about both space and ground combat. That always solves the issue for me, and it's something I have to do literally all the time.