I had just seen on the net that you can just order them. But I think they last forever in terms of quality.

Has this been looked at with Digitec sales support yet?

The only thing I could find on the net is the following link: https://www.amazon.com/-...

Apparently it is extremely difficult to get clear information on this.
Delivery is currently not possible with this large supplier, which indicates known supply bottlenecks with Asia.

I would also wonder...