Windows 7 no sync indicators

Hi there,
I had a quick look in the past disucssions, in vain.
I am wondering : is there supposed to be small sync indicators on the folders and files that are added to Insync in Windows 7 (you know, small ticks or arrows showing the sync status, like on dropbox or google drive clients) ?
I cannot know if my folders are up to date when I browse them in the explorer. The only solution is to check the tray status, but it’s not really convenient.
Thanks for your help !
Clément

@Clement_Fortot: Please do the following:

Open regedit.exe, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer \ShellIconOverlayIdentifiers and check what other apps have registered overlay icons.

There is a Windows limit (15) on the number of overlay icons that can be registered. Please see if the number of icons registered exceed 15.

If they do, then unfortunately, you will have to uninstall the overlay icons of one of those apps for Insync’s overlay icons to work.

Thanks

Mine has only 9 registered. What other options do I have if they don’t show up?