It is not even showing up as incoming in my receiving wallet page.
Can anyone help me please?
If 3LGaGxR2YjSBZ8uKgGiCCdqhUJNodkQ3tf is supposed to be an online wallet under your control and it's not showing the coins, you should ask that online service's tech support.
But first please carefully check the address - not only the first and last couple of characters, but also some from the middle; just to be sure...