I want to connect the app i did in the web to the app MIT AI2 Companion in the mobile phone

i need to connect my educational app i did the 30th november and the web don´t it allows connect the app in the web to the app ( MIT AI2 Companion ) and the mobile phone don´t have a problem the problem is in the app i did this day past

If I understood correctly you say that on the internet it does not let you connect to the app inventor companion so what browser do you have?