I figured it out. The option for sending to image.canon is hidden under the "Images" menu and not under Send/receive images". The interface is very weird. I hope canon makes it user friendly in next update!
The system initially did not prompt for firmware update.It did now. After updating the firmware, I am able to connect but the images are still not being transferred.On selecting "Send/receive images", and selecting album to send, only the "Update" op...
I am using T7i. I have no issue using NFC but I want to store my images online too. CS100 should connect to iMAGE Gateway to send images but now that iMAGE Gateway is retired, I am not sure how to connect to its replacement.