I tried the arrow keys also, but those weren't working initially. Once I got more ambitious and tried some of the other areas, I didn't have that problem (could navigate with the mouse and now understand how to gather items and fish). Once I went back to the Slime Forest after trying the other regions, I was also able to navigate with only the mouse.
Thank you for responding.
I also found some other minor errors (spelling or one time differences) -
the Log item shows up as Lod (I think this comes from the spooky forest).
When you're buying the battle boosters from Haves at the clinic, one of the level 2 boosters shows as $5000 price, and when you buy it, the pop up says "You spent $2500" but the $5000 is what comes out of your money - can't remember which one, but that only happened with one of the level 2 battle boosters (HP, SP, DEF, or ATK - I think it was the DEF or SP booster). This didn't happen for any of the other boosters at any level - the quoted price is what the pop up showed after purchase and also what was taken from your money total.