Limited Support
Our team is currently on holiday, so support will be limited during this period. Response times may be slower than usual, and some inquiries may be delayed.
We appreciate your patience and understanding, and we’ll resume our usual support by the end of August.
I can't find any documentation that tells me where the avatar picture comes from or how to change it. Your help would be great. Thanks!
wpDiscuz uses WordPress avatar logic, it depends on entered email and based on Gravatar system. wpDiscuz just use WordPress avatar functions. You can manage it on Dashboard > Settings > Discussion admin page, just change the value of the "Default Avatar" option.
This doc also should be helpful for you: https://wpdiscuz.com/docs/wpdiscuz-7/plugin-settings/comment-thread-features/#display-avatars