I think is high time we got back to the genesis of this problem...
Yes it may be a bug and yes it may be IG new ban method. IG may have noticed that even when an account is banned, spammers are creating new ones hence they rolled now way to frustrate "them"---- (maybe).
The genesis of this is to answer questions on account creation process:
Did you use web for creating your IG account?
Did you buy those accounts?
Did you use an online service to create your accounts?
Did you use an app like bluestack to create your accounts?
Did you tweak the Virtual app properly before creating the next accounts?
Which country did you originally create the IG accounts from?
Which country IP are you using to run the IG accounts? --(manually or bot via VPS)
Which country phone number are you using to verify these accounts?
and even more...
what I think is that when one or more of these info seem to vary consistently, then phone verification issue arises
For now i am just creating IG accounts, will start growing them and see how it goes!
Bug is fixed..I can now create easy IG acc and not ask for verification
Where did you guys create IG accounts? From web or mobile?