From the last many days, I have been trying to uninstall the secure folder but I cannot. I contacted the samsung customer service and they are reporting that there is a bug and they are going to roll out an update for it. I am really disappointed from the fact that secure folder has these kind of problems. I hope that they solve it as soon as possible.
As per your query, we request you kindly share the log file. This will help us to investigate further and resolve this issue.
Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).
Note: To ensure relevant log information is included in the error report, submit the report within 3 minutes of encountering the bug or error, and do not terminate (swipe away) the Samsung Members application until you are notified that the report has been sent. This can take up to 5 minutes.
