Error connecting between MIT AI2 App Inventor Web and MIT AI2 Companion Android Phone

when I try to connect between MIT AI2 App Inventor Website ( and MIT AI2 Companion on Android Phone.
that can not be connected

we can see on this picture bellow

someone can help me please, what can I do to solve this problem?

How does that phone connect to the Internet?

Through a cellphone plan or through WiFi?

in same wifi

I'm stumped.

Maybe you will spot something in

me too

this app ran well before,

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