Don't cry my friend.There was a good deal on Classifieds... sadly for US guys only... I offered more but it looks like he prefers to deal with US peoples only... too bad...
It looks like the ebay deal is already gone also.
Ok, no more cap for me, I don't know why I sold mine years ago (for cheap, to a US guy I believe, link here )
You can find a cap here : https://verdampftnochmal.de/products/en/lotus-vaporizer-silver-cap
Then, you'll need a wpa, a jhook, and your world we'll be fixed.
(i can eventually make you a wpa, i have a metal lathe)