Here is what I know after 8 1/2 years here. Maybe someone else has something else to add.
Open Windowblinds, go to settings. Look for "Always use the OS start button rather than the style one" Check that and click the "Apply settings now" on the top right side. If you want to change the start button open Start 10. Where it says "Style on the bottom it will say "Default" Click the dropdown arrow and you will have a list of other start buttons to use if you wish. There are also many others on the Wincustomize site.
As far as I know you can change the skin startmenu without making new images and using skinstudio.
If you want to use the skin you have you can make the Window 10 menu show when you click on the start button and the rest of your windowblind skin will remain. Open Start 10 and got to "Control" If you change the setting to "Start button shows the Windows 10 menu" This will show you the actual win10 start menu only. Now sure that is what you want but that is all that is available as of at least now.
