I send pics about my broken shoes.
Now, why my shoes cant recharge, no idea >_<
https://img11.hostingpics.net/pics/221106IMG20170930175145.jpg
https://img11.hostingpics.net/pics/398670IMG20170930175218.jpg
https://img11.hostingpics.net/pics/368535IMG20170930175656.jpg
http://www.hostingpics.net/viewer.php?id=785580IMG20170930175631.jpg
Your battery connector on the end looks like they are pushed out some, doubt that would probably be your issue though. If your shoes work when plugged in then its not the port...it's a battery issue. Check the battery voltage with your multimeter.