I assume you mean you used the wrong Hub account. In that case just re-initialize TKLBAM:

tklbam-init --force NEW_HUB_APIKEY

The next backup will create a new backup record associated with the Hub account's you just provided the API KEY for. If you mean you used the wrong AWS account when you signed up for TKLBAM I recommend you create a new Hub account, then reinitialize TKLBAM.