In order to receive experience, you need to upgrade your buildings.

You have to tap on your soldier and then tap on the enemy.

You can either play a single-player mission, multiplayer battle, use your Scrapyard structure, or exchange them for Gems

No you can’t, you have only one builder. The game is designed around being able to construct only one building at the same time, however you are free to upgrade inside your structures during the construction of your buildings.

Just click on the portrait and you can change your icon and name there.

In order to increase your storage capacity, you need to construct or upgrade Headquarters or your Vault structure.

Yes you can, remember that the only way to transfer your account to a new device is to have it linked to a Game Center account. Login to Game Center on your new device and the game will ask you if you want to load your military base on this device! 

Currently it is not possible to restart your game.  

Make sure that your device is set to allow in-app purchases. Go to Settings general Restrictions and check that In-App Purchases is set to ON. Then quit and restart the game. Please preform the following steps.

If you were disconnected from multiplayer game at any given moment, sadly in order to keep everything fair, we are not able to return your victory trophies or heal your expended units.

Player vs Player matchmaking is based solely on your amount of Victory Points. Thanks to this a player with much higher or lower level might be able to attack you, if he has the same amount of Victory Points as you. We will observe this closely in order to promote fair an enjoyable multiplayer experience.

Try upgrading your soldiers, with each upgrade your units are stronger than before. Using a different combination of your troops might prove effective as well! Experiment with your squad composition, you might be surprised from the results.

While most of the transactions go smoothly, sometimes Apple, Android or our servers might be slower than usual or experience an error. Please wait and see if the purchased gems come through. If they don’t try restarting the game. Your gems should be credited to you. If all else fails please contact our customer support via the help button in options screen that will land you on our website and we’ll get back to you as soon as possible.