Thank you for the feedback. I am sorry for the frustration. I am currently fixing the preview thumbnail issue and it will be resolved in the next update.

LockedIn should be stable, and I haven't heard of these malfunctions from other users yet. I am very eager to fix any bugs you're facing. Could you please provide more details via the 'Found a Bug?' section on the Feedback page in the LockedIn popup?

I'll work on fixing these issues immediately. Thank you!