I just posted a bunch of materials for sale. However, I can see none of them listed on the GBT or what ever you want to call it.
I even checked from other cities I have and nada.
For example, I posted 3 mil antanium for $3,000 per 100 so it should be right at the top in this screen shot.
The materials are being deducted from my resource storages. I restarted my iPad. Logged in and out of the game. But still nothing. Even if someone is buying them instantly, I'm not getting the cash for them either.
Playing on an iPad Pro on the browser based game in Safari.