Thanks for the export files.
I’ve just tested it, and the relationship field was working as it should be. Please make sure that you’ve selected the taxonomy on the module types meta box too. I’ve attached a screenshot for your reference.
If you want the taxonomy in the meta box selected automatically, please enable the “Load & Save Terms to Post” option. I’ve attached another screenshot for your reference.
If you want to share your credentials, you can set your answer visibility to private.
I hope this helps.
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