Solar panel not charging

I just got my bird feeder camera and love it! Except that no matter how sunny it is the solar panel will not charge it.
It charged alright inside plugged in but I don’t want to have to bring it in every couple of weeks to charge it.
Is there something that I have to do to make the panel work? It shows the battery icon with the charging symbol but the battery is still draining.

Please contact our customer service by live chat or email in Netvue APP, our agent will help you to address the issue.