How can i cancel only one (of two) Zoom One Pro licenses?

[vb_sachsen]

My two Zoom One Pro licenses expire tomorrow. Both are currently canceled. I would like to extend one of the two licenses, but I can't find a way to do this in the license overview. The only available option is "reactivate subscription", which would include both licenses. How can I reduce the number of licenses to 1 and then extend it?