Try to install this code at the stage copy of your site as a Must Use plugin.
It fires the same code as URE Pro does on user “Update Network” button and replicates current user and its permissions from the main site to all other sites of the network on the ‘woocommerce_checkout_update_user_meta’ action, that is when a user makes successful checkout for his purchase.
Let me know, how it works at your side. Again, try it at the test copy, do not use it at production site until you are sure that it works as expected.
