Cant open saved project gett error TW0003


I spent 5h making flowchart and saved it to my desktop for easy find.
Later when i wanted to check it once more before sending it i get error code
“your project doesnt belong to the currenty logged-in server.error code TW0003”

how can i retieve my work plzz help.

May I know what is the path of the project file you saved?