sm j510f read code failed 5 credit lost

sm j510f read code failed 5 credit lost
my login id below
login id zsc_yLAwHXhD

Checking Login and Password... OK
Ballance: 35 crd.
You have 35 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J510F
Android version: 7.1.1
PDA version: J510FXXU2BRB2
CSC version: J510FOJV2BRB2
Phone version: J510FXXU2BQK1
Product code: SM-J510FZKDKSA
CSC country code: KSA
CSC sales code: KSA
Phone SN: RV8J51S906E
IMEI: 356316086521838
HW version: MP 0.300
RF cal date: 2017.05.23
Chip name: MSM8916
Modem board: MSM8916
Security patch: 2018-01-01
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... COM6 detected
Reading data from phone... OK
Calculating... OK
Searching server... error
could not connect to server

Done with Samsung Tool PRO v.31.5.1

please return my 5credit mr.blang sir