Big problems after update 3.0

Hello,

I’ve updated my woocommerce to the 3.0 version.
Now i can’t edit edit products, add pictures, add tags, etc. etc.

What is the solution for this?

It’s about the websites https://www.domotica-webshop.com and https://www-d-o-t-zwartgroen-d-o-t-nl.alvast-online.nl/

Kind regards,