No gains, please advise

Hi guys, so to sum things up, I’ve been doing PE of and on for a while now, and after newbie gains the progress halted and it seems no matter what I do whether I do manual stretching, hanging, or use of an extender, nothing seems to work, all it does it makes my EQ better and it thickens my dorsal, its like I have a leather strap inside my dick when I stretch it, please advise what can I do about my lack of gains, also I use testosterone and growth hormone, maybe this is causing it to heal faster and thicken the tissue?

Any advice is much appreciated, thank you!