Hello,
The problem with “Ajax “Add to Cart”” is caused by Wishlist plugin. You can deactivate it check.
If you want to use Wishlist plugin anyway then you need downgrade it to lower version.
I’ve sent it to your email address. Please check. You need overwrite wishlist plugin folder in wp-content/plugins directory.
This bug will be fixed in the nearest update.
Sorry for inconveniences.
Regards,
Eva Kemp.