Di2 v1 rear derailleur trouble

[hairylegs]

My most used bike right now is my old look 595 that I’ve converted into a tri setup. The b screw plate was stripped so I replaced it while I also replaced the pulley gears and also have a new waxed chain.

So…now the derailleur is stuck in the low position - it won’t shift electronically or be moved manually.

Any ideas? Thanks!