I have used stride
to jump over n_H and n_W and test one gave me all test passed but in the second test it say AssertionError: Wrong value for A[0] in mode max. Make sure you have included stride in your calculation
here this output
Maybe this guide helps.
The key difference in the test cases is the first one has stride = 1 and the second one has stride = 2. The stride works the same way here that it did in conv_forward: you use it to compute vert_start and horiz_start. It is not involved in the ranges of the loops. You got some all zero values, which is clearly wrong and points to the type of error with the loop ranges.