Oy. They sure don't give much info, do they? Bad. They should tell you what you need to be upgrading or sidegrading from. But I'd say your guess is correct; in any case, just enter your serial number when prompted and see if it gets accepted.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3