1) to create albums inside albums - it is not clear what exactly you want to do and for what?
2) The Gallery is pushing the sidebar to the bottom of the page - The errors are caused by your theme. Our free services are not applied to custom themes layout styling. Our plugins are supported by all standard WordPress themes. Everything is displayed correctly if you have a standard theme of the year of 2010 or 2011. We are not responsible for the differences between standard and custom themes. Of course we understand that some users would like to edit styling or make some other changes to the plugin manually, that is why we offer our help since we can adjust any plugin for any specific WordPress theme. Or if you have programming skills, you can easily do it yourself.