Can't reactivate license
I've recently renamed a Windows 7 computer's Computer Name. Acronis has detected this as "Too Many Activations". Understandable. So, I clicked on the "I have changed hardware ..." option, whereupon it asks for the Acronis user account ID and password. I am then presented with a list of computer names and asked what this computer's old name was. So far, so good.
But wait! This computer's old name is not in the list. Due to a mistake on the part of a office staff person, several earlier copies of Acronis 2017 were purchased under a different Acronis account. This computer is no doubt listed under that account. The problem is, I can't get there now. Apparently Acronis has remembered and saved the ID I initially entered and now immediately bring up the (wrong) list for old computer names.
How can I get Acronis to let me re-enter a different account on this computer?