We've seen this before with unlocked phones that don't differentiate between Ting and our network provider. Until Google releases an update to patch it, some phones won't be able to use the "dun" feature of you APN, which just controls mobile hotspot.
If you never use mobile hotspot on your Razer, you'll not notice a difference. If you do want to use the hotspot feature regularly, I suggest reading over this Reddit thread detailing the issue and report the issue to the developers of Android.
There's no known workaround for directly altering this setting, as it's baked into the actual Android Open Source Project running underneath every Android phone out there. Until and unless the change is reverted or updated to recognize carriers like us (who allow you to tether with no additional charge), this is probably going to be an issue for you.