1) If a rep did make a mistake in saying the recommended dosage is 30mg, then it was simply mistake--or possibly a reflection of his personal dosing , a misunderstanding, or something of that nature.
2) If IML was initially going to role out the product at 30mg (I AM NOT SAYING THIS IS THE CASE) and later changed it to 20mg then there is nothing shady about that. There could have been a multitude of reasons for such a change. Furthermore this could have been a move to limit side effects. To quote an IM article which refers to Osta:
"SARM’s (selective androgen receptor modulators). SARMS were designed to provide steroid-like effects without the side effects found in AAS, but the true value of this compound (for PCT purposes) is found in the fact that it does not lead to suppression of natural testosterone production when administered at dosages of 25 mg per day or less (or at least not to any significant degree)." http://www.ironmagazine.com/2012/is-...-pct-obsolete/
3) As someone else mentioned there is no one stopping you from running it at a higher dosage, however this could lead to suppression and more side effects.
As I mentioned before I am running this product, and am keeping a journal as well if anyone is interested:
The Iron Man Thread - Bench Training / Journal