Any know why or had any problems shorting on ig index. I have been trying to put a short on safe style for a few days and it won't let me, also tried to short gattaca today and had same problem.
You're trying to short 2 micro cap stocks which most often won't be shortable on spread bet platforms as there is no liquidity for the platform to "lay off" the position. In contrast you'll find the FTSE100 stocks shortable, with coverage generally decreasing the further you go down the size scale.
You could try a traditional broker and see if you can borrow the shares to sell sort but again there aren't many about so it will be difficult for them too.