There is a bug in Woodmart that causes us not to be able to save html blocks and sometimes pages. When you edit an html block for example and add content/blocks/widgets, it saves and then is not there. Then if you refresh the editor page, the content that was added is gone.
Other times you get an error when you try to save it – Updating failed. The response is not a valid JSON response.
I have disabled all other plugins besides Woodmart Core plugin and Woocommerce. I also rolled back WP from 6.8.0 to 6.7.2 and still get same issues. In private section i added credentials to login and test on our staging site. Please get back to us ASAP.