iMessage Help 5c ( Ported number)

So I recently switched carriers and was given a temporary number for the first few hours until my number port completes , the issue that I have no with iMessage is that people are texting me at my usual number and I get the messages but when I reply it shows my temp number still?? and I cant deselect it once I enter iMessage via settings

All are checked and #1 cant be deselect it

1-it shows my temp number
2-my Number
3-the iCloud ID


Ive tried resetting the phone, all netowrk settings and nothing seems to work

any help?