I received this from Canon the other day but haven’t had the time to test it. Note that I’m having this issue on an iPhone X.
Thank you for contacting Canon regarding your EOS Rebel T6i EF-S 18-55mm IS STM Lens Kit. I understand that our Camera Connect app created lots of empty folders, and I'll be glad to assist.
I suggest that you delete the app by pressing the icon and then moving your finger clockwise around it until the x appears. Click the X to delete then press DONE on the top right of the phone.
Make sure your phone has the latest version of iOS by going to SETTINGS - GENERAL - SOFTWARE UPDATE. Follow Apple's instructions for updating the OS, if an update is available.
Then, try loading a new memory card in the camera without any images. After doing so, go ahead and reload Camera Connect from the App Store and then reestablish a connection.
Let us know if problems persist. Otherwise, please let us know if we can be of further assistance.
Thanks again for choosing Canon, and I hope you have a good week.
Sincerely,
Nick
Technical Support Representative