Are you not able to configure your extender because of the non-functional state of mywifiext local web address? Well, this is just not your issue, but many users are facing the same problem, i.e., mywifiext local fails to connect. The first thing that you should check while experiencing this issue is whether the internet is working properly or not. If there is no problem with the internet, then you should check if the web address has been entered without any mistake. If everything is alright, then you should contact experts.