diluted Thermia not appearing in inventory and Exploiter orb bugging

[Aresis01]

The diluted thermia I had in my inventory have disappeared. Moreover, when I seal new fractures, the mission summary tells me I got 2 diluted thermia, but when I check my inventory, there's nothing there. 

So then, with a friend who has a lot of diluted thermia, we tried launching the Exploiter orb fight anyway. The Exploiter came, but no thermia canister or baby spiders were spawned, forcing us to abort the mission.

Edited August 14, 2019 by Aresis01
confused name of big spiders

[Noir_Prime]

I finished the Exploiter Orb fight today and was trying to redo the mission, but then it showed that diluted thermia is required. I checked the rewards from last mission and it showed that I was rewarded one diluted thermia but it didn't show up in the inventory and I wasn't able to start the mission. The problem still persists now.

[Pryzmatiq]

I can't see how many I have either, and it's driving me insane.