Update: The problem has just been solved. They needed to verify the payment method for one of the accounts and locked out all accounts associated with that phone number. No requests about this were sent to any email address, and if SendGrid hadn’t reached out via this post, we would have had no clue what was going on. Still, it took us 36 hours with no access to SendGrid accounts - frustrating. Thanks to everyone who helped, liked, commented, and DMed.

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SendGrid just locked us out of 50+ client accounts under our management - including our own corporate account!

Since SendGrid / Twilio requires 2FA to accept an invitation for delegated account access, and the only available method is a phone number, we had multiple accounts linked to the same number.

Suddenly, Twilio stopped sending verification codes to that number, and the call option isn’t working either.

To make matters worse, we can’t reset the 2FA method because that feature is locked.

If anyone can tag someone from their authentication team to resolve this today, it would be greatly appreciated - our business is on hold until this is fixed.