Flavour stock levels

After having ordered Huel and had my first meal of it, I felt it was a little flavourless, so went to order some flavours, hoping to get Strawberry, unfortunately it was out of stock, and I believe it has been out of stock for quite a while.

In order to keep up regular orders, I’d like to be able to order which flavour I want when I need it. Can any changes be made to ensure flavours are always in stock?

I think they must come in quite regularly as when I looked today some of the ones that were out of stock a few days ago. I went for toffee but it wasn’t my first choice