Unable to install MySims (2007)

I have recently tried to play MySims again but it wasnt installed on my PC but has been linked to my account. i couldnt play before because it just wouldnt start so i uninstalled it.

Today I went to try install the game again and now it is saying that i dont own the game, yet when i go onto the game page it says that i own the standard edition (See Attached).

It has been ages since played this game and would like to play again, i have tried the contact page but they were unable to resolve my issue so i have come here for some help.

Thanks in advance.