ISO 14230-4 (KWP FAST) & SAE J1850 PMW, ELM327 v2.3 connects for half a second then goes back to connecting

[mynameisbensowhat]

Car: Audi A4B5, 1.8t, 1998
Protocol: ISO 14230-4 (KWP FAST)
Cable version: ELM327 v2.3, Vgate Vlinker FS
Driver: CDM-v2.12.36.20-WHQL-Certified
Configs:

• Serial Port: AUTO
• Baud Rate: AUTO (10.4k not available)
• FAST

pyOBD is trying to connect and seems to do so for a split second ("Car connected!"), then goes back to "connecting..."
It reads everything listed in -Status-Description- with exception of the VIN.

Trace shows:

Level Message
1 App started
2 Connection attempt: 1
2 Connection attempt: 2
2 Connected to: COM6
1 Communication initialized...
2 Connection attempt: 1
2 Connected to: COM6
1 Communication initialized...

Then it just repeats it self/goes back to "Connection attempt: 1".

I tried with the car running and just turning the ignition on.

I tried changing the baud rate manually.

I tried changing to "NORMAL"

Edit 1: added information

Edit 2: Just tried it in my other A4B5 1.8t (1999, so face lift). Protocol is SAE J1850 PMW. Same configs but also same problem. I'll try to find a different driver.

Edit 3: I downloaded and installed the driver from the Vgate-Website. I updated the firmware of the VLinker. Still the same problem.

[barracuda-fsh]

Well, the European cars were legally supposed to support OBD2 protocol from the year 2001 on. So maybe your car does not support OBD2.