List Accounts does not show an account when logged in as a reseller

Symptoms

You will see that some accounts are missing from WHM's List Accounts when logged in as a reseller.

Description 

Resellers can only see accounts that they own.

Workaround

You will need to update the account to be owned by the reseller. The article below covers this in detail.

How to change the reseller ownership of one or many accounts