Could someone tell me how to play guild war?

When did tynon fix the bug?

Today in the server 26, Guild Farstride attack the city mistfall of guild tsundere. In 1st round, one Farstride guy marches A to B, and finds no one at B. In 2nd round, almost Farstride guys march A to B, then got the system message, Base A had already been occupied by the tsundere.

It is clear that tsundere use the bug of the different time between clients and server to do it.

It is not the system glitch. It is the bug.