It sounds like an engineer visit is required, but realistically that isn't going to happen overnight. They will need to arrange for a contractor to visit.
It sounds like either a problem with the internet connection, a faulty unit or a unit that hasn't been installed quite right.
During setup, make sure you have good wifi for the EO unit but also make sure you have good mobile data signal - your phone needs to communicate with EO central whilst it's still connected to the EO Mini Pro that won't yet be online. I discovered this the hard way!
It sounds like either a problem with the internet connection, a faulty unit or a unit that hasn't been installed quite right.
During setup, make sure you have good wifi for the EO unit but also make sure you have good mobile data signal - your phone needs to communicate with EO central whilst it's still connected to the EO Mini Pro that won't yet be online. I discovered this the hard way!