There’s a few reasons that might be causing problems for you. Keep in mind that in some situations it can take up to 24 hours. So if you've already activated, it could just be a bit slow:
Check you’ve got the activation code right. It can be easy to misread it or type the wrong thing
If you’re trying to activate a second SIM under your account it won’t work. It will just try to swap your number to the new SIM. You’ll need to create a separate account for each SIM
Make sure that if you’re trying to activate with a voucher, that the voucher has enough credit for the plan you’re trying to buy
If you’re still stuck we’d recommend asking the community. They’re a super helpful bunch who are great at sorting out more specific issues.
Did this solve your problem? If not, pop over to our friendly community for a quick response. Or ask one of our helpful agents for an answer within 24 hours.