I have created workflow on Document library list in office 365. Than migrate it on another site and open same workflow than Edit task form button is getting disabled. While hover on Edit task form button it is showing "Nintex Form is loading.." but no further is process is done.
While click on configure on Activity and select Edit task form at that time it is showing "Nintex form for office 365 is loading..." but no further process is done.
Here i have attached screen shots for same.