I believe you're supposed to cut some notches in the bottom of the pickup tube on the filter because otherwise there are fluid starvation issues. Came to mind since you said it wasn't there before the job.
I'm having problems with the TC locking on the 4-5 shift myself rn
The QuattroWorld website is not affiliated with or endorsed by Audi AG or
Audi of America, Inc. AudiTM, QuattroTM, Avant,
Tiptronic, FrontTrak, A2, A3, A4, A6, A8, S3, S4, S6, S8, TT, TT-S, R8,
RS4, RS 6, Q7, Q5 and allroad quattro are trademarks of Audi AG.