Hi, thank you for testing it out, could you please describe how you were able to buy a miner before the tutorial step?
Once I got 15 currency the buy miner button lit up. The tutor popped up and had several screens of dialogue - I bought the miner before he said "Hire a miner" - softlock. Just reproduced it by running game in a different browser.
Reloaded this one and it's fine, the lock's cleared. Just something to note.