Problems with initianting Adobe Frame Maker on desk top

Hello sir, My name is Finn Aune. I am a Norwegian, but I live in Thailand. I have used Framemaker for almost 2 decades. Today I purchased an upgrade from 2015+(or older) to 2019 release. I then downloaded and installed it on my laptop and initiated the licence number. All went fine. I then wanted to install the program on my personal desk top computer, which is the one I use for my daily work. When entering I was asked for the licence number. After entering the new licence number, I was told that the licence number was valid, but that I had to enter the licence number from my old product. I did so, from my verson 12. But nothing happens after that. Seems that this number will not be accepted. I paid a high price for the product (THB 25.295,-), from Adobe Store team (Singapore), which is my region. There were only two options when buying: Upgrade or full price. The price for upgrade was higher than I have seen in other advertisements, but I wanted to buy it anyway. How can you help me?