AH commodities - auction not available?

As an alchemist without the time to go out and farm mats, I rely on the AH for my herbs. Ever since the regionwide merge, I would sometimes get “That auction is not available” message pop-up when trying to buy. Is anyone experiencing this and know of a solution or work around?

This is for retail BTW

i had that exact thing earlier but it fixed itself in a couple minutes.

not all items became available at the same time, potions worked before flasks did