Best way to show an inner submenu on mobile website?

On my mobile website I have a menu for the main website navigation. When you are in your account area, this is a further submenu, which is accessed by clicking the second burger menu button.

The submenu appears like like this:

However some feedback I got from some users was that they didn't know where the account area options were (I personally thought / still think this is obvious enough).

So is there anything I can do differently here to make it more obvious?