@aymanugod No problem. I’ve already reported this issue to the developer bug tracker. Let’s hope this can be solved at some point. If you have any other issue let us know.
Pencil2D is still considered beta software, so we’ll also be releasing as soon as we can a video that shows some known issue so new users like yourself are aware of what are the caveats of the program.
Since you’re using windows 10 by all means please take a look at our windows exclusive guide too: [Guide] How to Train Your Pencil2D (Windows)
It can help avoid common tech pitfalls that affect the program on Windows systems.