Hello @Hotmail Address
Thank you for reaching out on the community and telling us about your issue. I do apologize for the issue you're having. I was taking a look to see if Tastyworks was an option and it does not look so. In order to have your broker added to Quicken you'll need to contact them to request for it to be added to Quicken. Another thing as well is since it's a brokerage account they'll generally need to have a direct connect option as well where Quicken downloads from their servers. I'll leave more information down below as well. I do apologize for an inconvenience this has caused.
https://www.quicken.com/support/how-quicken-connects-your-bank
https://www.quicken.com/support/what-do-if-my-bank-not-listed-quicken-or-if-my-bank-was-recently-added-quicken
Thanks,
Quicken Francisco