Hi, Thank you for using Notezilla .
Notezilla displays the sticky note based on the title of the associated window. In this case, the title of the Windows File Explorer inside which the folder is opened.
To resolve this, please enable the below option from Windows File Explorer's Options so that whole folder path is shown in the title of Windows File Explorer.
After you do this, go to the sticky note and stick the sticky note to the window with full folder path in the title. This way you will make sure that the sticky note shows up only on that particular folder.