Why can't gold runes be used in tribal conflicts?

The unavailability of gold coin charm stone is related to the number of times of use in the month, the piggy bank and the number of gold coins. The specific solutions are as follows:

First of all, the first situation that the gold coin symbol stone cannot be used is that there is an upgraded "piggy bank" in the current village. Because the deposit value before/after the upgrade is different, it cannot be used for the time being, and can be used after the upgrade of the piggy bank is completed.

Secondly, another situation is that the current gold coin capacity has reached the upper limit, for example, the upper limit is 8 million gold coins, but it is already 8 million gold coins or higher, so it cannot be used.

Third, the third situation is that gold coin runes were used in that month, such as gold coin runes and holy water runes in tribal conflicts. Only one rune stone can be used every month. If one has been used in the current month, it can only be used in the next month. To determine whether the gold coin rune stone has been used in the current month, just enter the "base camp"-"magic items" and try to use it once.

4. After opening the list of magic items, find the "rune stone of gold coin" and click the rune stone.

5. Click "Use" in the use window of the gold coin rune stone.

6. As shown in the figure below, if the "OK" button is colored, it means that the button has not been used in the current month, so you can use a button. If the button turns gray, it means that the gold coin rune stone is used in the current month.