My Mi3W cant activate micloud

i cant acivate micloud using my mi3w.

when i activate micloud, i received sms that INTL sms sending failed.

INTL sms number is 1579447786209730

my location is south korea and my telecom provider is SK TELECOM.

also, i got notification "cant get my phone number" from micloud. and i got notification "sim deactivated"

but, phone status show my phone number correctly.