Phone wiring. What have I done wrong.

I just wired a type 2c jack in the lounge and the same in a bedroom (on the other side of the wall). Both of those are working but the downstairs jack is now not working.

Here is the old lounge jack in the lounge before rewiring. It had blue and white wires going to it and from it to the bedroom but the wires going from it have been replaced.
https://trademe.tmcdn.co.nz/photoserver/full/362415968.jpg Here is the jack that was in the bedroom. It had blue and white coming from the lounge, and blue and red going from it downstairs. https://trademe.tmcdn.co.nz/photoserver/full/362390357.jpg
Here is the new jack in the lounge with incoming white and blue wires connected to the outside slots. The red and white wires go to the bedroom. The phone works on this jack.
https://trademe.tmcdn.co.nz/photoserver/full/362393546.jpg Here's the new 2c connector in the bedroom, red and white wires from the lounge on the outside. The phone works on this jack. The red and white wires on the inside head to the jack downstairs. https://trademe.tmcdn.co.nz/photoserver/full/362393610.jpg
Here's the downstairs jack with red and white wires coming into it. I just rewired it yesterday because I re routed the wire. It's a type 2 and it no longer works. Not a crackle. It was working after I re routed the wire yesterday.
https://trademe.tmcdn.co.nz/photoserver/full/362418573.jpg Here's the one in the kitchen which I think everything else is downline of. It's an M (master?). It has a no longer used alarm wired into it but I don't wanna remove it without a closer look because I can't follow the wiring. I haven't touched the wiring on this. https://trademe.tmcdn.co.nz/photoserver/full/362415786.jpg

So I'm thinking either the master jack can't have three jacks downline from it, or I can't have two jacks downline of one of these 2c jacks, or I can't have a type 2 downline of a 2c.

My wires go from the inside terminals of the lounge 2c to the outside terminals of the bedroom 2c. That works. Then my wires go from the inside terminals of the bedroom 2c to the downstairs type 2. That doesn't work now.

Any ideas?

That jackpoint that isn't working is badly corroded. Replace it.

It is but I rewired it yesterday and it was working. But yeah I'm thinking I might need a 2c in that place anyway. The photo makes it look really bad.

5th picture, its wired wrong.
The wires should be in the middle pair on the connections.
White wire to the middle on the left side.
red wire to the middle on the right side.

1 4
2 5
3 6
Use terminals 2 and 5.

I have a feeling you may need to remove the old jacks and replace them with the new 2 wire units, I didn't think the old master and slave system was compatible with the new 2 wire system

They work fine, they just don't use the ringer wire. The main difference is the two wire jacks all of the left terminals go to the same pin and all of the right terminals go to the same pin, whereas the old jacks each terminal goes to a different pin.

OP says that is type 2 jack. As you say all slots on each strip go to same socket contact. 123 same 456 same.

Screw terminal connection strips are very unreliable for light gauge wire. The screw could easily miss.

It sure doesn't look like a 2w jack, with the capacitor, the age and the pins heading on to the pcb separately.

You are correct, but if the other downstream jacks work except the last one on the line you may be barking up the wrong tree

There are some 2 wire jacks out there with ringer capacitors. They allow old phones that have a separate ringer connection to still work. And when a modern phone in plugged in the capacitor just does nothing. It was simply a way to get the benefits of 2 wire. While maintaining backward compatibility with phone that need 3 wire.

That barking wasn't really related to the non working jack, just general reliability. The connection fault could be the quality or otherwise of the punched down connection. If you don't use a proper tool you can get jacks that work "sometimes".

I'll try rewiring it as vivac says.
I now have a krone tool which is great.

u need spark