Please try the new 3.5b version, which may fix the problem. Here is how to download and verify it: https://bitcointalk.org/index.php?topic=2647654.msg45442768#msg45442768. If this doesn't help, please send us the log file to see what exactly goes wrong.

1970.01.01:07:15:48.496: unkn OpenCL driver version: 18.5.1
2018.09.09:22:48:59.585: main Phoenix Miner 3.5b Windows/msvc - Release build
2018.09.09:22:48:59.585: main Cmd line:
2018.09.09:22:48:59.585: main config.txt: -pool stratum+tcp://etc.hvpps.net:3333 -wal 0x4afc488F6E42A6502A187A268da302D156B19C79.AwesomeMiner -pass 2.0 -proto 4 -coin etc -stales 1 -fret 5 -ptimeout 5 -ftimeout 180 -rate 1 -cdm 0 -amd -clKernel 1 -clNew 1 -clf 1 -eres 4 -lidag 1 -gser 0 -gpureset 0 -tstop 67 -tstart 50 -gt 12,10,8,12 -mi 14 -clgreen 1
2018.09.09:22:48:59.585: main Available GPUs for mining:
2018.09.09:22:48:59.585: main GPU1: Radeon RX 580 Series (pcie 1), OpenCL 2.0, 8 GB VRAM, 36 CUs
2018.09.09:22:48:59.585: main GPU2: Radeon RX 580 Series (pcie 3), OpenCL 2.0, 4 GB VRAM, 36 CUs
2018.09.09:22:48:59.585: main GPU3: Radeon RX 580 Series (pcie 4), OpenCL 2.0, 4 GB VRAM, 36 CUs
2018.09.09:22:48:59.585: main GPU4: Radeon RX 580 Series (pcie 6), OpenCL 2.0, 8 GB VRAM, 36 CUs
2018.09.09:22:48:59.641: main ADL library initialized