Woo commerce Error : Waiting for Davinci woo update...

Please arrange updates as soon as possible for this theme.
Just for future reference. This is a common thing with many Woocommerce themes when Woocommerce updates itself (not just DaVinci Woo) and they will be updated as soon as possible. You just need to have patience. Contacting the theme developer every time is unnecessary.

how did you restore the old version of woocomerce?
You can restore the old version from a backup but it is counter productive, I don't suggest it. At my end, it was only the tabs of the single product page. I restored tabs.php only. This is only if you updated this file in your theme as instructed by woocommerce plugin. But it is not necessary if your theme is updated.