Installing Adobe Photoshop 2021 on my PC and 2020 on my old Mac with the same license?

I have just bought Photoshop Elements and Photoshop Premiere 2021 for my PC and have now installed them. However, I would also like to be able to use the Photoshop Elements on my old Macbook Pro, which I cannot upgrade beyond High Sierra. Am I able to download the 2020 version on my Mac, whilst using the 2021 on the PC, with the one license? (I am assuming it is compatible for both operating systems.)