Inside profile the avatar would not show up because it's taken by the system, the plugin only takes care of the parts where avatars does not exist already.
You have to reset or revert to original your templates to set own customized avatars.
By the way i have updated the plugin, but in next version i will take sugestions and more to make it more usefull.
Anyways you can use it by manual to set your customized avatars for guests or users at your owns, the difference will be that many parts of new codes must be written in order to get, and set new customized values aswell.
Cheers.