If you have a flight presented on the disc of your smart-phone, tablet, or computer it can be uploaded to the SeeYou.Cloud for personal evidence and further analysis via Upload dialog.
Upload dialog is easily accessible through SeeYou.Cloud menu or toolbar on the top of the window:

. Once you have opened Upload dialog just click on an IGC file and drag/drop it to SeeYou.Cloud upload dialog:

OR
you may go classic way trough explorer via Select files > Open > use the standard Windows/Mac graphics interface to select a flight file you would like to open.
Note: Depending on the IGC file length it may take up to a few minutes to process it on SeeYou.Cloud server!