I found an issue with cloud service if i don't use a key or didn't have interest in using it some parameters do not work, like for example -M for device selection.
Could you please send full command line, I can test it.
Here
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
eminer.exe -S stratum+tcp://europe.ethash-hub.miningpoolhub.com:20535 -U halker.amd -P x -M 0,2,3