Schematics not available

[lethys]

Are lower level schematics not available at all?

For example the Delicate Arcanite Converter schematic is not available at it's NPC vendor

Is this a known issue on the server or am I missing something?

[TelekineticGenie]

Some vendors only sell (1) of an item. When someone buys it you must wait a certain time for the vendor to restock.