shifting probrlems 2nd to 3rd and 4th to 5th CEL ON please help

hey guys l need some help just got this 04 Passat TDI(was not running)got it with trans issues l replaced the TC and trans oil pump put everything together and now have a slipping from 2nd to 3rd and 4th to 5th DTCS P0732 AND P0734 been reading here and found tranny gone but l don't have $2500+ to get a reman want to know if any of you rebuild one of these? what can be my problem clutches orings or?
PLEASE HELP
THANK YOU

Sell the car as is before you are more upside down that you already are.

Did you recheck oil level after first drive?
Sounds like an oil pressure problem from your post

Get a 5 speed.

its for sale $5500 you wanna buy it?
going to reche the oil level today honestly l just checked when l put everything together.

For $5500 you can buy one that doesn't have any issues. A blown transmission '04 Passat TDI is a $2000 car at most.