I am working with version 12.0.3.1821
I usually have several SQL queries open.
Every time the computer restarts and I restart the application, I am asked whether to restore the open queries and I can choose from several save dates.
Then after the selection I get my queries back.
Today something happened and all my queries were deleted and if after restarting the computer I don't get the message that the queries have been restored.
In the folder: C:\Users\USERNAME\AppData\Roaming\PLSQL Developer 12\PLS-Recovery I found several files including: PLSRecall.dat + desktop.cfg.
But I can't restore them into the interface.
How can the restoration be performed?
I also checked in options > Recall statement and the folder name is set correctly.

Perhaps you can use option recall statement in PLD : menu Edit \ Recall statement (CTRL + E)