Hey there @Klism_ and @THA1derful, thank you both for getting in touch. I am sorry to hear that you have been experiencing problems accessing your content when you have a PlayStation Plus membership. It sounds strange and I will gladly take a closer look into it.
Could you both please first go through this technical troubleshooting article for me ensuring you have completed all of the steps? These steps can help rule out many of the common causes for technical-related issues. The article does state that it's for the PlayStation 4, but the same steps should apply for the PlayStation 5 (if you're on that platform instead).
If you are continuing to experience problems after going through those steps above, I would recommend that you both reach out to PlayStation Support for further assistance so that they can check your memberships and ensure everything is set up correctly. I'll continue to keep an eye out for further information from my side. If either of you has any questions or runs into any other issues, please do not hesitate to let me know.