I have done everything listed: enabled my security verification, navigated to and removed all trusted devices, restarted Nvidia Now, reentered my security code, and still get the same error.
I've spoken over the phone with EA Customer Support, and they cannot remove the lock-out, and have said they do not have a fix for the issue at the moment. They mentioned this would be a recurring problem and recommend not using Nvidia Now at the moment unless you're able to contact Nvidia and manage to lock your account to one device. However I do not know if that is possible. EA is in no way partnered with Nvidia, therefore resolving this issue doesn't seem like a priority to them, as it seems to fall more on the side on Nvidia.
March - last edited March
@xXISpookIXxI also spoke to EA customer support and they claim the issue is with Nvidia, though I eventually convinced my tech support agent that it is in fact an EA/Origin issue. This is due to the nature of GeForce Now, and their use of virtual computer access, each login is technically a different machine ID. Origin sees the same account accessed on multiple devices in the 24 hour period and temporarily disables the account. Therefore, Origin/EA will have to adjust this rule somehow (or remove it entirely) in order to be fully compatible with GeForce Now. See my post above about cycling Apex play between two accounts in order to play while you wait. Hopefully they fix this issue soon.