Hi there Mich3lleeann. Please allow us to look further into this. The last update we have on the LG Stylo 4 is that it could be activated with Boost mobile if it is purchased unlocked directly from the manufacturer. But, we would like to look further into your issue. Please send us a private message with the IMEI/DEC number and we will confirm if this is an actual Boost Mobile device. Victor21
Hey there, @Mich3lleeann! This happens when you use the wrong pin number to access to your online account. Depending the amount of failed attempts, it'll lock you for 2, 4 or 24 hours. We are unable to unlocked i in our end, meaning that you will need to wait the time listed on the message in order to access to your online account.
I had no problem activating mine through Boost mobile I got it done in a matter of minutes. I had a Boost phone prior to this also. and I did on the phone itself. Or you can do it on a laptop or call them.