you can try telnet to your pool and port you are using from command prompt, if you are able to connect then should be good.
you also can try other pool just to check.
telnet xmr-asia1.nanopool.org 14444 that is the example if your pool is nanopool and you are using port 14444.
Telnet runs fine and such does jce_cn_gpu_miner64.exe 0.31f or older.
The issue only occurs on 0.32 versions (from 0.32a to 0.32j) and I can't understand why, especially why it only affects the Cryptonight V7 (--variation 3).
I've also tried to replace the .exe in the same directory, but the result is the same.