Accounts don't show up in the account picker
When accounts are not showing in the account picker (say during transfer) or during a deposit into account, there is a possibility that an empty account has been created in the system. The empty account will prevent the 'Account Picker' window to show the list of accounts to choose from. Therefore, all you need to do is go to the subledger and delete the empty account.
Empty account
As you can see, there is an empty line in the sub-ledger. This empty line must be deleted.
Select the empty account and delete
First select the empty row account and then click delete.