Meta options selected in woocommerce order section not visable any more

Hi,
After upgrading to 12.6 the selection customers makes using your plugin is no longer visible in the WooCommerce>Order>particular order section. Instead the system just shows $0. This is in admin section so you can’t see the problem on the website. I am attaching a link to a screenshot hopefully you’ll be able to see from here:
https://www.dropbox.com/s/kv70w94ex5lx3mb/PPOM%20problem.jpg?dl=0
Please see the area circled in red.
Could you please help with that?
Kind regards.

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