connected but, after how it works ????

Hi all, I'm very interested in this app but honestly, I don't understand how it works. I'm connected through Ardroid web, but don't see anything from my phone. No screen, no sms, and It seems I can't do anything. No explanations either on what to do.
And did not find anything in the website.
Is there any "Airdroid for dummies" ?
Thank you for your help.

@anatole07

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