All guilds are allowed 3 disconnects in guild war. A disconnect happens when a player doesn't finish a war attack for any reason, even if it's a technical or a connectivity issue. After the 3rd disconnect, the following will happen:

* Your free or extra attack will be used
* No record of an attack will be in the log
* Opponent may show as Under Attack
* A win may show up as a loss
* Heroes may be marked as used

Please ensure your device has very few apps running in order to provide good performance and a strong internet connection. You may even need to try other networks if the problem persists.