"Folder example" became "Folder example 2" after i open file and new note. Now cant find my data

Operating system

Windows

Joplin version

3.0.14

Desktop version info

Sync Version 3, Profile version 47

Sync target

Joplin Cloud

Editor

Markdown Editor

What issue do you have?

Hello, i am trouble with an issue which happened today. There is a folder which i pasted large of data , text and so on. While on this folder i just created New Note , and then this folder was "Example Folder 2" . Now i dont know how to open there is no way to look 1 page of folder. Even cant back. Just simple seems new page . And Example Folder 2 .

What can i do. ? Please Help.