Hi – sorry you’re facing difficulties here.
We can certainly leave this open in case other members of the community are able to chime in, but I think some further steps worth taking would be setting up a test product (unrelated to events/ticketing) and see if the same thing happens there.
If so, contacting the team behind WooCommerce is probably worthwhile as this technique really relates to WooCommerce itself and is sourced from their own documentation.
I hope that helps 🙂