How to upgrade units last shelter (03-01-19)
Go to command centre. Troops. The upgradable units have an up indication on the left side. Select the unit. Click on the star with the banner. You can choose to upgrade with crystals or with time.
Go to command centre. Troops. The upgradable units have an up indication on the left side. Select the unit. Click on the star with the banner. You can choose to upgrade with crystals or with time.