I have owned Premiere Elements 21 since last September. All of a sudden I ca no longer use it because attempting to do so results in a screen appearing advising sign in required. When I push the button another it results in another screen with two options activate this software by entering a six digit serial number the other option button asks if i want try this software.
It appears that the program believes I do not own the program.......How can I fix this and use the program again????????