As far as the upgrades go, you can only select one Per Rank. So only up upgrade for rank 1 and so rank 2 and so forth. You shouldn't be able to buy the last upgrade for 5000 if you haven't gotten a Rank 4 one yet, does it still let you? Cause if it does, that's a bug. Hmm, and here's a screenshot showing you were how to enter the name. It could be "L. Lopez" or without the space and all in caps should work too. 
I enjoy it a lot i hope the glitches i encounter got patch up because it was annoying to take down that blue humanoid hulk monster when it gets stuck inside the walls and hey good to know your almost finish with the game it is going to be a blast to play you have no idea how long i waited for a rpg maker horror game that was not running and hiding but with heavy combat or at least the option to fight back like calm falls or alone eternal nightmare shadow seeker will truly be a cult classic for sure.