So a friend and I did a few tests on that section you are talking about. 
We were able to get on top of it.
My friend said "You have to hold the jump button basically while right against [the column]"
Can you give it a try again?
If that doesn't work, can you let me know some details:
- Your computer's operating system?
- How much RAM your computer has?
- If you have trouble reaching any columns of that height outside the tutorial?
This way, we can see if we need to optimize this game better for certain machines.