Cannot restore test case from file in Katalon Recorder

After a long time, I open Katalon Recorder again and I noticed that I cannot restore my test cases using json file or krecorder file into the new PC. What happen?
If I use json file => nothing happen
If I use krecorder file => Only show the first test case, cannot open the remaining test cases by clicking on dropdown list.

Hi, do you receive any error logs?

No, I didn’t get any error logs, it’s just nothing happened. You can see it in the uploaded video (using Chrome). Thanks for reply!