Hello,
We have many users who can’t edit variable products but problem is related to additional plugins that they use, for example https://www.8theme.com/topic/checkout-page-not-working-variable-product-settings-not-working/#post-160682
Out of date files can’t cause this problem with variable product!
If you provide me admin panel and FTP access I’ll replace out of date files before the theme update because we have fixed them.
Regards