I installed 3.2.8 with the same problem. As the admin I am able to change settings, add albums but there is no option to add a gallery under image store galleries. That has never worked for me. What can I check? I’ve reset setting and reinstalled a bunch of times with no luck..
What other plugins are you using? what theme are you using?
Looks like there is permissions issue that may be conflicting with the menus or permissions, maybe installing a roles plugin may help, check the admin capabilities.