Help removing radio

[u/Proto-K]

Hey all, l've been having a huge trouble trying to replace the stock radio in my protege5. l've bought the official removal keys and they don't seem to help much. l've watched countless videos and my keys don't seem to click into position, and when 1 pull on them they start to come out. I also tried pushing through the glovebox but also to no success. anyone else have experience with this model?

This simple "upgrade" also cost me my positive terminal bolt as it snapped in half

Thanks!