I need some help understanding lot sizes please

Hello, I am new to forex trading and have been thru the babypips school which is fantastic.
I am having trouble working some things out. It does not seem to add up to me.

Yesterday I took a buy trade on demo account on GBPJPY. My account is in USD.
I used this lot size calculator to work out my position size based on account balance of $3400

see pic


This is the trade taken on MT4 platform with my demo broker account with Trade 24


According to the lot size calculator each pip is worth approx $2
Yet my trade only made $4 profit.

I really confused and need some help as this to me is mst important step in trading. Working out position and lot sizes.

Any help is much appreciated.

Sorry the image is not better. Details are:
Type size symbol price s/l t/p close price profit
buy 0.03 GBPJPY 166.928 167.070 167.336 167.070 $4.17

If i’m reading that correctly you intended to trade 3 [I]mini[/I] lots but instead you traded 3 [I]micro[/I] lots. You might want to spend some time reading up on those terms.

Thanks for the reply and info. I think I am misreading the lot size calculator. Thanks again.