Today one of my accounts didn’t want to get an email from Instagram for the verification code.
I tried both EB and “If you have problems with email confirmations loop in the EB use this option to try to verify via API” without any codes in my mail.
try to disable 2FA then logout from the EB and verify the account from the API not EB, see if that solves the issue. Are you using a proxy on that account?
The accounts I was refering to with which I’m having trouble with .ru based emails are fairly new though emails are being received perfectly for established accounts. You might want to wait for sometime for the email.
It isn’t just the IP always. I had the same issue with couple of thousands of accounts and definitely they were not on same IP. They are flagging accounts too, especially the ones on .ru emails, not all but yeah alot of them.
Like @proxified said, don’t blame the proxies all the time.
There are many factors, from logging in via Browser vs. App, Rate of you trying, Account trustscore.