Re: [JCE]Fast & stable CN/v8/Heavy/Tube/XHV miner, CPU+GPU, Vega56 1800+ RX580 1200+
Is it a quite weak machine? I had that problem a while ago with Monero and some older machines. The pool rised the difficulty higher and higher till the machine had no chance to return a hash in the given time. As a solution, I added the smallest allowed difficulty after the wallet address in the config file. With your pool it should be ".100000" 
I'm using fixed difficulty, but I think the main problem is the linux JCE just goes to command line after IP ban instead of reconnecting. It should keep trying to reconnect to the pool.
hi, add --forever --keepalive to your cmd line when starting jce miner.
M/