Hello Rai’ut,
Thanks for reaching out!
I’m sorry to hear about this issue. I’ll try to help you with this.
Unfortunately I do not have access to WPLMS so I cannot do any local testing.
Can you open your browser’s web developer tools (F12 or Ctrl + Shift + I on Chrome / Firefox, Option + Cmd + J on Safari), switch to the Console tab and check if you see any error messages there when you load the page?
You can also enable WP_DEBUG and WP_DEBUG_LOG and see if any error messages show up on the page itself / in the log file.
Thanks,
Andras