Hi, I purchased some Bio-T and tried it on one of my moles but never had any luck, has anyone else used this product, did I do something wrong?

I have no idea what that is or what it is supposed to do to your moles. I personally wouldnt put any chemicals on any moles, because who know what kind of carcinogenic affects it can have. If that is supposed to remove your mole, forget about it and go to the dermatologist. Whatever it is for i would definitely not recommend it, at least before you have spoken with a dermatologist about it