Hi Jean,
Please follow the steps to see it if works.
1. firstly, tap on "setup wifi", link to your smart phone wifi settings and connect to the temporary wifi "Netro_PLS_XXX".
2. Quickly return to your Netro app, still in step 3 of 6, tap on "Next" button, select your homewifi and input your home wifi password.
If it still fails, please send us email to support@netrohome.com with your Netro account registered email. We will have our technician look into this issue.
Thanks,
Netro Support