Sub not playing but is on, amp and lc2i lights are also on

[oswin]

So I recently wired a sub and amp to my accord 2024, I bought the Kicker 49L7TDF122 12" 600W and the Kicker 46CXA8001 CXA8001-800-Wattb and used the lc2i pro since I'm using the stock radio and have no rca outputs, I'm very new to all of this so have grace on me. I wired everything correctly, grounded everything with a bolt, (sanded the paint first), the amp and lc2i lights turn on, amp is not on protective mode, I used power from the amp to power the lc2i but added a fuse, I tapped into the passenger door speaker for signal,  wired everything correctly to my lc2i but my sub isint playing anything, when I disconnect the knob from the lc2i I can hear the sub disconnect, I'm receiving signal from the speakers, I'm just not getting any audio output to the amp I believe, I switched the rcas, everything, rca from lc2i is on output and to the amp rca input, I know everything works because someone had tested a normal line output converter like the small ones and it worked perfectly, the only difference was that he used the rear speakers so he told me use those, and I did but that didijt change anything, I tried everything and I've come to the conclusion that it's the lc2i pro that's not allowing any output, any tips or suggestions?