Please make sure you have reloaded the commission widget, and also make sure the instructor is not changed after the order is completed.
Please check if the commission is shown in the woocoomerce product, please refer: https://www.youtube.com/watch?v=Crjpf3BabYQ
Okay can you please make sure that the inctructor clicked on relaod icon in that widget ever ?
check : http://prntscr.com/dbnx8t
If above does not helps then please share your site url and admin credentials ,credentials of that instructor in a private reply to check this .
Here is a screenshot sent by one of my instructors (https://alfange.academy/author/thomasp/instructing-courses/) : https://postimg.org/image/inmzijygb/
Yet he made sales. Why it's at 0?
CAn you please share credentials of this user who is facing the issue with the commissions in dashboard ?
PS : mark reply as private while sharing credentials .
Ok the commissions are saving in database which can be seen when you view order in wp-admin -> http://prntscr.com/ddot1n
We need to check the query ,can you please share a valid FTp credentials to check this issue at your end .