I’ve installed the trial but it’s asking for a license key.
What TDP installation package are you using? if it’s beta, the latest version is 4.5.0.271 and you could download from below link
https://community.toadworld.com/products/toad-data-point/toad_data_point_beta_program/
Cindy
The Trial key has probably expired or you had a trial before. You can request a new extended Trial key on this page. https://www.quest.com/company/contact-us.aspx