You receive the following error message when you are trying to merge your Trend Micro account:
"Unable to Merge Your Accounts"
If you have more than one Trend Micro Account, you can conveniently merge them into a single account and keep track of your licenses easily. Keep in mind the following terms to understand:
Source Account – This account will no longer work after you have finished merging it with the final account that you wanted to keep.
Destination Account – After you have finished merging the accounts, only this one will remain. You will then use the Destination Account to manage all of your subscriptions in the future.