Why has Apple got my wrong Apple ID.

Thankyou Eric, for taking the time to reply. I am afraid all of this is completely beyond me. I remember I was told something like this before, some months ago. It was too much for me to contemplate. I am using a MacBook Pro with a program called Logic to record music. The program is old and I cannot update it for the reasons stated above. In the end I concluded that it would be easier for me to carry on with the old program rather than go through any of this. I use another program with Logic called Melodyne. I found out I couldn't use it without updating and therefore I am retrying to upgdate Logic. The people at Melodyne {company called Ceremony} told me I had to upgrade. This morning I found out they were wrong and I can use it with the old program. Now I will try and carry on without any updating. My other option was to buy the App Logic again for 200$US. I was considering his but still had no guarantee that it would work. Anyway thanks for trying to help. I felt I owed you a full explanation.

Thankyou Mr Hoffman for replying. I am afraid all this is too much for me to understand and implement. I have got an old device which somehow is as you describe. When I say somehow, clearly I did it. That is why I had to buy a new device. A Macbook Pro. The old MacBook Pro is of no use, and I will try and sell it for parts.

It is a shame but I have tried to contact Apple many times through its support page and have gone around in circles. I have even been to an Apple Centre and they couldn't help. If you look at my previous response you will see how I intend to continue. Thank again.