SM-950U Xfinity Wrong Code

Flashed combo then unlocked with Read Codes. Tried to enter network code but not accepted. Flashed last firmware and try to enter code and still comes out wrong. Now, I lost 5 credits.

Is there a solution for this? Saw a thread from Apr 2018 and follow what @Blang said in there. To upgrade to last firmware. Still code not accepted!

Operation: Read Codes via Server
Selected model: SM-G950U
Selected port: COM75 SAMSUNG Mobile USB Serial Port
Software version: 33.5

Checking Login and Password... OK
Ballance: 10 crd.
You have 10 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G950U
Android version: 7.0
PDA version: FA70_G950USQU2ARC1
CSC version:
Phone version: G950USQU2BQK5
Product code: SM-G950UZKACCT
CSC country code:
CSC sales code:
Phone SN: R28K14L97YB
IMEI: 356353081632880
HW version: REV1.0
RF cal date: 2018.01.31
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2017-02-01
Boot Warranty bit: 0
Rebooting phone... OK
Waiting ADB device... OK
Rebooting phone... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... OK
Searching Ramdump interface... COM52 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Freeze code: 16148686
NET lock: 17428363
SUB lock: 00000000
SP lock: 00000000
CP lock: 00000000
For check lock status: *#7465625#

Done with Samsung Tool PRO v.33.5