Charging Current is too low

Hi,

I am currently using the MP2672AGD battery charger IC. I have connected a 5 V, 2 A adapter as the input power source. However, when I connect the adapter, the battery charging current is only about 300 mA.

I am also sharing my schematic. Could you please help me identify the possible cause of this issue? Is there anything in the schematic or circuit configuration that could be limiting the charging current?

What is value of R28? the one on ISET pin? it is not very readable