I bought Digital game on PSN (ps4) , my son found “The lost CD of the same game” and he insert it on the PS4. Now i cant start the “digital game” without the cd game. Why ?
Both the digital version and the CD version will work. Once you buy the digital version, the CD is no longer needed. Keep in mind that the digital version is attached to the account it was purchased for and it’s non-transferable. Meanwhile, anyone can borrow the CD and play that game wherever they are or on whichever account they are on. Virtually both contain the same game but physically the CD has more freedom of course.