My purchased themes and stacks not showing

[instacks (Jannis from inStacks Software)]

Check the KB, e.g.
https://kb.realmacsoftware.com/article/16-how-to-manually-install-add-ons

Or the forum:

Lost most add ons and themes with upgrade to RW7 from RW6

Hello , It has been a while for me using RW. But just upgraded to 7 and cannot locate my library of purchased themes. Any help? How can I locate them to reinstall.