credit to refund

please i try unlocking this phone when reach waiting for codes it remains like that always why and my 10 credits already taken so refund right now please this is the log below
7/2018 4:54:19 PM ] Operation: Read Codes via Server
[ 8/27/2018 4:54:20 PM ] Selected model: SM-J510FN
[ 8/27/2018 4:54:20 PM ] Software version: 33.5
[ 8/27/2018 4:54:20 PM ]
[ 8/27/2018 4:54:21 PM ] Checking Login and Password... OK
[ 8/27/2018 4:54:22 PM ] Ballance: 40 crd.
[ 8/27/2018 4:54:25 PM ] You have 40 credit(s) left. This operation takes 5 credits.Continue? Yes
[ 8/27/2018 4:54:29 PM ] Waiting ADB device... OK
[ 8/27/2018 4:54:31 PM ] Reading phone info...
[ 8/27/2018 4:54:31 PM ] Model: SM-G965U
[ 8/27/2018 4:54:31 PM ] Android version: 8.0.0
[ 8/27/2018 4:54:32 PM ] PDA version: G965USQU1ARBI
[ 8/27/2018 4:54:32 PM ] CSC version: G965UOYN1ARBI
[ 8/27/2018 4:54:33 PM ] Phone version: G965USQU1ARBI
[ 8/27/2018 4:54:33 PM ] Product code: SM2G965UZKAATT
[ 8/27/2018 4:54:34 PM ] CSC country code: USA
[ 8/27/2018 4:54:34 PM ] CSC sales code: ATT
[ 8/27/2018 4:54:34 PM ] Phone SN: R38K402YLBE
[ 8/27/2018 4:54:35 PM ] IMEI: 353321092899841
[ 8/27/2018 4:54:35 PM ] HW version: REV1.1
[ 8/27/2018 4:54:35 PM ] RF cal date: 2018.04.04
[ 8/27/2018 4:54:36 PM ] Chip name: SDM845
[ 8/27/2018 4:54:36 PM ] Modem board: SDM845
[ 8/27/2018 4:54:36 PM ] Security patch: 2018-02-01
[ 8/27/2018 4:54:37 PM ] Boot Warranty bit: 0
[ 8/27/2018 4:54:37 PM ] Incorrect model selected. This may damage your phone. Continue? Yes
[ 8/27/2018 4:54:42 PM ] Searching Samsung diag port... detected COM902
[ 8/27/2018 4:54:44 PM ] Reading phone info... OK
[ 8/27/2018 4:54:44 PM ] Reading data from phone... OK
[ 8/27/2018 4:54:45 PM ] Searching server... OK
[ 8/27/2018 4:54:49 PM ] Waiting for server answer...
[ 8/27/2018 5:09:40 PM ] Operation aborted
[ 8/27/2018 5:09:40 PM ]
[ 8/27/2018 5:09:45 PM ] Operation: Read Codes via Server
[ 8/27/2018 5:09:45 PM ] Selected model: SM-J510FN
[ 8/27/2018 5:09:45 PM ] Software version: 33.5
[ 8/27/2018 5:09:46 PM ]
[ 8/27/2018 5:09:46 PM ] Checking Login and Password... OK
[ 8/27/2018 5:09:48 PM ] Ballance: 30 crd.
[ 8/27/2018 5:10:24 PM ] You have 30 credit(s) left. This operation takes 5