Thank you for playing and giving me such a detailed feedback!
I'll change the "take a nap" from the night option because, as you say, it's redundant.
The different "work" options are usually a "I'm going to work now" meaning that not being able to back out from them is intended, and most actions are intended to be done once you select them.
I'll have to change some code in the progress screen because the pictures are in the game, thank you for pointing it out.
As you said adding more steps in the middle would be a huge work load so I don't plan to do it, and I'm glad that you enjoy their looks!
The coffee sizes are intended to be unlocked after drinking the previous size once (and owning enough money to buy the next one) I'd like to have more info about what you are experiencing because these should be unlocking.
I'll check the code to see if there are any errors or exceptions that I haven't seen!
Edit: It should be fixed now, you may need to reset the game one more time to make it work as I've had to create some new variables that need initializing!