Hi @Marko_Sarkanj,
Please right-click the empty space on your Insync window and select “Sync All Items”. Additionally, should you want new files to auto-sync, kindly go to FOLDER SETTINGS (found at the top menu) and enable “Sync new children of partial folders”.
Our 1.4’s Now@ feature allows you to sync your file on demand to gain more control over your files. These guides can help you further: Your guide to 1.4 (vs. 1.3) and Sync On Demand