That may be the issue. As you can access episode 1 yes?
But not 2-4
What I would do is contact the refund department and request a refund for 4 of those purchases. You can do so at the link below.
To request a refund, simply fill out our contact form at https://www.playstation.com/get-help/contact-form/ and select “refund request” from the drop down list in the PlayStation Network & Account section. You’ll need to have the following to hand;
- Your PSN Online ID
- Your Sign-In ID (Email Address)
- Your Date of Birth
- The name of the purchase you would like refunded
We will process your refund request as quickly as possible, but it could take up to 72 hours for us to verify your claim. If you have started downloading the game to your console, your request will be declined and we will notify you of this.
You may also request a refund by using the form located here.You may want to refer to the purchase confirmation email you received when you made your purchase in order to complete this form.
As far as the other 4 episodes, if they arent showing on the transaction history, then you have paid for them as of yet~
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