Flat Average Line in Y-axis chart

Hi support, 

I am encountering a challenge with one of my Y-axis data showing as flat against different events. My second y-axis is appearing just fine and both settings look similar. 

I have ''linked'' all files with Auction No. (I made sure all data sheets have the same format ex: 01. SONGWE-M1, 02. MBINGA-M1, etc.) Somehow only the TCB results Average Price is fluctuating from one auction to the other. 

I am attaching files for references. 

Can anyone share thoughts and support please?? 

Thanks,
Rafael