Yes, you need to go into your TOOLS>Admin Settings, and select the P icon (for permissions) for you user login.

Then, make sure you select all the menus/tools/mods that you want your logon to have access too! (It's the purpose of this mod to allow you to set what permissions/access each admin logon has access too, as part of that, you have to make sure you give your "master" admin access to everything!)

For the Apsona access, you need to make sure you have checked/selected the following:
salemaker info
salemaker popup
apsona index

Once you have given yourself permission to these contributions, then you should be able to input that address into your browser address bar, and it should take you to the Apsona module.