As indicated by @hTideGnow first check if your payment card was charged. If yes put the pm Sim card in your phone and reboot. Do you see public mobile in the top left corner of your screen? Do you have any service? Calling? Texts? Mobile Data?
If your card has not been charged your plan amount wait out the one hour lock out session and start your activation over again. Did you try to port in your phone number? Are you coming from pc mobile or koodo prepaid? Porting in a landline or voip provider phone #?