Most, if not all Toad products used on a trial basis will convert to freeware if the trial license expires. You should still be able to use the product, but in freeware mode.
Your Quest Software Account Manager can discuss your needs with you, depending on what they are… s/he can either extend your trial for a limited time, or you can purchase a term or perpetual license to activate all of the product’s features.
POST Edit:
It appears that there may be an issue with the product when it enters freeware mode, given your inquiry at Toad For SQL Server 6.8.2.9 Freeware request code … and looks like the Dev team is looking into the issue… stay tuned.