SUM ALL VALUES WITH SAME MONTH AND CATEGORY ON ANOTHER SHEET

1 So I have this table which includes transaction Log with corresponding DATE on (A) and ACCOUNT on (E). Cell C will take on amounts for each transaction.On another sheet, Profit & Loss I have another table where I want to add the values that have same months and categories in common

Here is the Sheet, it contains the formula I already tried.please help me.https://docs.google.com/spreadsheets/d/13GYevBUJ3yXOEOyqL6Pon_62_TczTXDzod-ETe3s8F8/edit?usp=sharing