Two Issues where I cannot correct/edit/void, nor delete an incorrect transaction posted to SAGE ACCOUNTING ONLINE - I have noted my work arounds, but there must be a better ways!

1) I recorded the wrong amount of bank interest in an account, with the pop up window reconciliation page (where it appears as a bank receipt). I could not correct or void it. I had to create a JE to clear it on the bank reconciliation. See Screenshots

a) - pop up on rec. page to add interest (also other bank or interest charge)

b)- Activity on the Account (banking tab), shows the incorrect bank receipt interest of $9760. And a balancing JE entry. (Both are not yet reconciled); The correct bank interest of $9.76 also shown (reconciled) Bank Rec page (the 3 transactions at the bottom):

c) - New Reconciliation -  for the account. If this is the only way to edit a transaction, I'm very afraid of future typos!

2) I also encounter problems trying to void payments(even in a different screen - before clearing them in a reconciliation). I've had to change the paid amount to $0.01 and then create a write off expense to clear it with the vendor. 

see screenshot "payment to vendor to void"

Is it possible, that even though I have full access to our SAGE business account (though I am not the owner and did not set it up), that there are some functions still unavailable on our account?