Hi, Patrike
I found a bug in Awesome miner!
As you know Nicehash supports SSL connection. To use it user must edit 2 fields "URL base" and "URL prefix" of the page "Properties" in Online services.
"nicehash.com:9200" must be changed to "nicehash.com:443"
"stratum+tcp://" must be switched to alternative field "stratum+ssl://"

The problem is:
after restarting awesome miner the field "nicehash.com:443" will be overwritten back to "nicehash.com:9200" and the connection becomes impossible (because the alternative field "stratum+ssl://" keeps still active.

This looks as a part of automatic synchronization process when awesome miner updates pools information.

So, I suggest you to add "Use SSL connection" option for nicehash pools, because user changes have effect only until next start.