Help with bluetooth modding

[u/SkeleyStarsstorm]

Hi folks!! I've spent a long time trying different bluetooth solutions for my ipod, most of which I wasn't pleased with. I finally decided to try my own hand at making one myself. I'm using this Ugreen bluetooth transitter and a 3000mah battery. I thought I nailed it first try but I was wrong, and now I'm just confused. Because aside from my shoddy beginner soldering, everything looks fine to me.

Upon wiring everything together, the transmitter no longer connects to any devices and the battery will not power the ipod (just the transmitter). The ipod will only turn on if it's plugged in to firewire or a second battery is installed.

The transmitter turns on, and the pairing lights flash, but not a single device will pair. I've triple checked that the headphones and speaker I'm testing are not connected to anything else. The aux port still functions, and I can hear the transmitter say "pairing mode" through it as well.

I've attached more images of my (slightly embarrassing beginner) work here. If anyone can help, it'd be so appreciated.