Zwo should supply an external antenna kit, for current users, I have had mine for about 6 months, tried using it but had extremely poor wifi signal, since then it has sat in its box, doing nothing,
I find it hard to believe that you made a really great product for Astrophotography, and in the process made it almost usless, I see many requests for an external antenna in future models, but not all of us can afford to buy a new unit when such a feature is introduced.