Its not a case of run as administrator or incorrect version. All the other options function fine.
Yes, but you need to have spent CU and RU before activating Numpad 3: Unlimited CU/RU.
As the read-me file state:
you must FIRST buy something using CU. THEN, you can
toggle this option on. It may take several seconds for this option to work.
The NEXT item you buy, your CU or RU will increase if you are spending some.
I found that some missions start without CU or RU and thus cannot spend any making the trainer's code inoperative. That said, it didn't stop me from wining those missions 🙂
Upon using "unlimited resources" option - The enemy carriers immediately blow up. Seems to be a bug.
I tried Skirmish mode with AI. (3vs3)
And when i activated that option, 1 enemy carrier and 1 friendly carrier blew up. so you are correct. altho i haven't had this issue in the campaign.