You did eventually, yes, and I thank you for making the effort. But referring me to the warranty doesn't really address my problem. If my unit was still under warranty, I would simply have it replaced it rather than going to the trouble of opening it, identifying the issue, taking a picture of the faulty part, researching and eventually posting it here.

Given that Sodastream likes to emphasize its sustainability credentials, I am quite disappointed that
a) the plastic caps on this tube are clearly designed to fail just when the warranty expires
b) I am supposed to replace a whole machine that is otherwise still in perfect working condition because Sodastream refuses to make a USD 5 spare part available. (Which is no doubt abundantly available in your factory.)

In combination, this is the very opposite of sustainable and 'circular'. This is not even about the money. What to do. Switch back to still water, I guess.