If you entered the SIM successfully in first attempt; and now you have "Invalid SIM" it means that you have associated the SIM with a PM account - which would be your phone number [that you are trying to port to PM].
You will require a moderator assistance to fix the issue; expect 72 hours response time.
I suggest you login using the account using your "user name" (email address) and password. You will need to "activate" the account, the PM will send you a text message with a code. You will therefore need to put your "old" SIM back in the phone, in order to get this text message.
Once you have logged in, check your plan, your payment history, I suspect you will find your payment has posted and your "clock is ticking" but of course you have no cell phone service, and a 3 day wait until someone can actually help you get the service working. Make sure you insist on getting a credit for your "down time" since it was not your fault.
If your credit card was not charged, you are in better shape, you still need to get a moderator to fix the issue with the SIM, but you won't be charged for 3 days of service at least.
Remember your old plan will be active until the number port is successful.
