You're looking for information on obtaining a license key for Toad for SQL Server.
License Key Management
Search volume for this keyword spikes around product upgrades (e.g., Toad 9.0 to 10.0) and the end of fiscal years, when budgets for software tighten. toad for sql server license key
Freeware Issues: Users of the "Freeware" version often encounter license prompts after a certain period. This usually indicates the trial has expired or the community key needs refreshing. You're looking for information on obtaining a license