Hello,
When I try to add German notgelds to swap and apply a filter by Issuer on "German notgelds", it hides lots of the notgelds as well.
Also some of the notgelds were initially shown in Burundi section.
Without filter:
After applying filter (please also note that the fact that filter has been applied also is not shown)
Notgelds that are shown from Burundi:
I use Chrome, but the same is on Chrome mobile