because EU flypool is down
Unfortunately our hosting provider is currently experiencing issues in two EU data centers causing ALL our EU stratum mining nodes to be unavailable at the moment. We are sorry for the inconvenience and are in close contact with our hosting provider to restore access ASAP.
and dstm hardcoded use encrypted stratum to eu1-zcash.flypool.org:3443 for Fee and if miner can't connect to DevFee host miner stops working

this think is nail in the dstm's miner coffin...