I'm getting an error that states the quests I have are not in the Questie database. I have uninstalled and reinstalled the addon using WoWUp. I have uninstalled and installed the addon manually. Also, I have tried resetting the addon in game under the Advance tab but I'm getting the same error messages.

That's because you have TBC quests in your quest log while running Classic Era version.
Install TBC version and go to Questie Options > Advanced > Reset Questie
If you're using WowUp, make sure to install latest version and it will grab TBC version for you, then restart Wow and Reset Questie

That did not work.