My last daily task is to increase the kingdom’s level with gold. When I do So, the number goes down instead of up.
What does it say exactly?
And what does it say as a small text on the side and when you click on “more info” to expand?
You could provide screenshots and make this easier
Go to that one kingdom where you have level 4 already, upgrade it to level 5 with gold and see if it says 5/10 after that