Это игровая особенность. Все действия произведенный Вами до появления  квеста не распознаются  игрой как совершенные. Для успешного завершения задания Вам  необходимо  выполнить действие  снова.

You can build the Coastal Restaurant on the sand. Note, that you need a road adjusted to it. In case you have no sand in your City, you can always change your landscape. You can make changes for City Credits only, therefore first make sure you have enough funds to complete the action.

In case you have accounts in Facebook and Twitter, select relative check box in the congratulations window.
Note, that the award is received only after you post the information.

Pay attention that Facebook has a limit set on 20 posts a day.
To post more news, please wait for the next 24 hours. That is Facebook feature.

Twitter has the other specifications. It is never allowed to post one and the same information. Thus to benefit from one and the same collection for the second time you need to delete your previous post.

Свой код Вы можете найти, нажав на иконку Cоциальность (синие полоски с точками) -> Общение (два человечка) -> Пригласить друзей -> Ваш Код.

Рыбная ферма может быть построена только на воде (для этого потребуется участок размером не менее 3х3 деления).
Пожалуйста, обратите внимание на то, что к ферме должна быть проведена дорога.

В случае, если в городе нет воды, Вы всегда можете изменить ландшафт. Это можно сделать за Сити кредиты. Пожалуйста, убедитесь, что у Вас достаточно средств, чтобы завершить действие.

Please, note that with the new update your opportunities to increase the population have been changed. The higher is upgrade level of entertainment facilities, the higher is your population level. Thus now you don't need to buy new constructions, you can upgrade the ones you already have! Moreover, you can benefit from entertainment facilities, selling goods for a higher price! Pay attention that from now on the population limit will also grow with placing more trees in your city.

To remove the house or tree tap the item -->> press "Bulldozer"  -->> confirm the action by pressing the “Destroy” button.

That is a game feature. Quests are sent randomly.
Thus you can receive one and the same task even twice.

That means that you can produce twice more production for a certain period of time.

You can build the Fish Farm on the water. Note, that you need a road adjusted to it. In case you have no water in your City, you can always change your landscape. You can make changes for City Credits only therefore first make sure you have enough funds to complete the action.

There are two limitations in the game. To open certain productions you need not only to upgrade the facilities but also to be at a  certain level in the game. 

That is a new function of the Coffee Houses, Newsstands, Coastal Resraurant, Doughnut Cafe, Russian Restaurant, Sushi Bar, etc.
You can execute contracts in these facilities and sell produced goods for higher prices!

To redeem the code press the button with two people (the very left button in the row) → press the "Social" button (with an index depicted on it) → "Friend code"→ "Go" and enter the code in the field.

You have 4 Available Spaces, but for the certain amount of Coins or City Credits you can buy as much Space as you want.

We can assure you that at present there is no such a bug in the game: Сity Credits cannot disappear without cause.
At the moment City Credits can be spent only to get buildings, items or services (such as an automatic income collection, momentary building construction).
The game doesn't have the slightest opportunity to take them from your account itself.
Please, be careful not to spend money on items or services you don't need.

You can earn money in the following ways:

- Complete different jobs;

- Sell ready goods;

- Advance to new levels and get game cash;

- Recieve daily bonus;

- Buy gold coins for real money.