Variable products not displaying on page

I have a problem with newly created variable products not showing up in product listings.

If I create it as a simple product first and then convert it to a variable product it shows up, but if i then change text in ‘quick edit’ it disappears again!

I have to keep switching between making a product a simple product or a variable product. I saw that a user had a similar iussue 6 months ago and that this was being resolved however it seems the problem still remains.

At the moment my shop is useless as I cannot amend/add variable products. Please advise.

The page I need help with: [log in to see the link]