Thanks so much for playing and testing it out !
The try again screen is broken, so it is necessary to reload the game to try again, will get fixed, bug wasn't noticed in a rush to reach the deadline - that screen appears when the time runs out (5~ mins) or if you go to exit door room without all the items (most of the cases), so in order to play you have to avoid that room until you're sure that you have everything (which you can check pressing Enter)
Will fix screen resolution, your assumptions is right hahah it was developed in a resolution and checking other resolutions/fixing it, was set low on the priority list but is a learning for next time.
Thanks for seeing the vision though the bugs lmao really appreciate it <3