Howdy! Can’t connect to Flexpool tcp or ssl US west and east server on T-Rex miner. Anyone encountering this? 
I’d suggest putting a support ticket in on flexpool.io with your ETH address and full command line, and preferably a screenshot of the miner output.
Looks like pool regions in the US are doing pretty well at the moment overall, so it may either be a configuration or a network issue on your end or between you and us.
Having the same issue. Was working fine, then stopped. Works fine if I change the port to 4444. Error for me is “Connected host had failed to respond”.
Any possible solve? Been looking at forums endlessly trying to figure it out…
Yes, I switched port 5556 on the Brazil Flexpool server. Only the Brazil server has port 5556 open (you can’t use port 5556 on the US servers for example).
ssl://eth-br.flexpool.io:5556
Hope this helps! Works perfectly for me.