Disclaimer: this mod is hard! It's a supply challenge, it is in expensive recipes mode, it has tight time constraints, it has biters actively attacking you without even pollution... Don't feel bad if you dont succeed at first! It's totally fine! :)

• I've started the game but I can't place burner or electric drills, is it a bug?

No, this feature is intended: Spice Harvesters (from AAI Vehicle: miner Mod) are the only miners allowed to mine resources,
burner and electric drills are deactivated, but you can still craft them to use as ingredients for more advanced Harvesters.

• I've failed a level, should I restart?

Probably not! This mod is designed to test you ability as the Emperor of Dune, failing levels (say <50% of the levels) is totally fine and it is part of the intended experience, new features of the game require you to fail levels sometimes.

• I've failed a level, what happens now?

When failing a level, the timer will stop but you'll be able to meet the requirements of that under no further time cap, when reached, you'll advance regularly to the next level. Beware, new attacks will be send to your Capital with increasing frequency when playing "without" timers.

• I keep failing/succeeding every level, is it the intended experience?

Failing levels is totally fine, however, to keep the experience "balanced" if you find yourself failing every level by a long shot or completing every round with much time to spare, I recommend adjusting the difficulty in the Mod setting -> Global/Map settings. You can choose among 5 different difficulties.