Unable to send texts thru iMessage to non-apple users/phones.
I can send text messages to other Apple users/phone numbers on my MacBook Air(2020, fully updated) but cannot to non-Apple phone numbers (it will state "unable to deliever/message failed".)
I have restarted, updated, checked my settings but unsure why it works for those who have apple phones but not for non-apple phones.
MacBook Air (2020 or later)