Hello,
since I installed the modern theme I have trouble adding members to groups.
Every time you add a user and then update this page is not saved and I landed on a list page groups but with only the group that wanted to make the change
Please update all your plugins and the theme, and let us know if the issue remains.
Hello,
I am now using wplms 2.0.6 and all the updated plugin. Do not use the modern theme, but the problem still remains
This is working correctly with the modern theme. Can you check if there are any js errors reported in page ?