I'm having some issues with OpenShot

So I just installed OpenShot on my Windows 10 laptop, and I'm having some issues.

The first one is that no matter what I set my volume to, it all sounds the same. I could have it at level 2, and it sounds the same as level 100. Zero obviously mutes it but aside from that it all sounds the same. By the way, I'm talking about my computer volume. It doesn't happen in any other app, but only in OpenShot. I should also say that I use bluetooth headphones, specifically the Sony WI-C200.

The second is much simpler, and it changes my layout every time I close the app. If I move the Properties tab to the right and make it smaller, and reopen the app, it stays on the right side but it stays the same size as before I changed it. Is there any way I can save it as a custom layout?

Any help is appreciated. Thanks!