@robolink_leila Please have a look at the picture. One side of the 3M tape („velcro“) is clued to the battery, the other side has kind of a velcro structure that cannot stick. Means it‘s just laying on the top of both of the motors.
@robolink_leila Same here. I am using an Apple Time Capsule 2.4 GHz and 5 GHz with an iPhone, a Win 10 tablet and a Macbook Pro. Unfortunately I cannot establish an online connection. I am able to run Zumi in Offline mode.