Are you a new customer?
Did you change to a new sim?
Did you get a new phone?
Did your plan just renew or change your plan?
Has anything changed on your account?
Does calling and texting work?
@amber_e_09 Double check that you have turned on cellular data and roaming. Then make sure your APN settings are correct: https://productioncommunity.publicmobile.ca/t5/Knowledge-Base/Setting-up-Data-APN-on-your-phone/ta-p...
If still stuck, please include make/model of your phone in your response to jp2.