The pool shows as dead when I put in following details
solo.ckpool.org:3333
Bitcoin address
Password: x
I have tried 443 and 3333 both.
The software on the miner is HiveOS.
The reasons are usually one of the following:
A temporary routing issue between you and the pool.
Your username is not a valid bitcoin address.
Some IP addresses have been blocked due to multiple previous failed attempts to connect.