Coming from Indonesia where my laptop has updated to LR 12.1. Can not import the catalog now because my LR in Europe can not be updated to 12.1!?!!
Lightroom has updated to 12.0.1, not 12.1. This update does not do anything with the catalog and there are no differences between a catalog from Lightroom in Indonesia and a catalog from Lightroom in Europe.
Do you use another computer in Europe? Which version of Lightroom do you use in Europe?
What happens when you try to update in Europe? Describe in detail. Please provide any error message.