It’s not about regions, its about how the orders are stored and how the data is managed. Given HPOS stores the data in new tables, standard methods like get_post_meta() or update_post_meta() can no longer be used and plugin developers need to rely on woocommerce api methods e.g. $order->get_meta().
Your plugin could be 100% compatible with HPOS and you might only need to declare support using a small php code snippet. I haven’t reviewed the actual plugin code so I’m not sure if any changes are really needed, but the documentation provides information on what parts have to be update and how to declare the support.
I understand this might take you some time, especially if you will have to make changes and retest everything, so I’m not expecting a quick update.
I’m also happy to create a PR with changes if you’re using github for development and your repository is public.
Thanks!
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This reply was modified 1 year, 8 months ago by mb00.