Hey @chadzilla,
Where do you put the spam validation code in CF7? It looks like you’ve been fighting the same spam that I have been getting for a few days now.
I just updated to Yoast 4.0.1. It fixed my issue with visual composer. Thanks Yoast team!
Having the same issue. After updating to Yoast 4.0 my visual composer does not work. If I deactivate the Yoast plugin visual composer works again.