I want to delete any lessons and courses, but it has a mistake and display these in the web page:
An error has occurred while processing your request. Depending on the type of error, it may be automatically logged and reviewed by our team so please retry your request in a few minutes. If you are still getting this error message after a few minutes, please email us at email@example.com.
I try to delete them in Login - LingQ
but the lessons and courses still in my account.
So, how to delete lessons and courses?