Go to Home > Site administration > Appearance > Themes > Aardvark
There you will find the settings for that theme. I can be a .jpg or .png. The extension does not matter. You should place the logo and favicon in the pix directory of the aardvark theme, i.e. theme\aardvark\pix
Constance
I did this and now the favicon is showing because I have to go into the theme settings and place a check in Theme designer mode. Now that is working but not the logo. in Aardvark settings I put the logo as sitelogo.jpg and it got rid of the old on, but the one I created is not showing up.
Ladydee
You also need to go to Development > Purge all caches as the old stuff may be "stuck" in your cache.
Did this and still can not see the image I created, attaching it.
This is a .jpg.
LadyDee
Perhaps you should post your question in the themes forum: https://moodle.org/mod/forum/view.php?id=46
Thank you will do.
LadyDee