It seems like you're experiencing some technical issues with QuickBooks Database Server Manager. Based on the information provided, it appears that you've already tried various troubleshooting steps, including reinstalling, repairing, and enabling hosting. 

Let's attempt to log in to your QBDB33 if you have the necessary permissions or access. This might be the cause of the restriction if you are not logged in as an administrator. Furthermore, please ensure to turn on the hosting within the program.

Here's how: 

1. Close QuickBooks Desktop.
2. Open the Windows Start menu.
3. Open the Control Panel and then select User Accounts.
4. Find the QBDataServiceUserXX for your version of QuickBooks Desktop. For QuickBooks Desktop 2020, look for QBDataServiceUser30. For the 2019 version, look for QBDataServiceUser29. The number goes down for each version.
5. Select Change the account type and then Administrator. Then select Change Account Type.
6. Select Apply to save your changes.

Once everything is set, then start rebooting the system.

Follow the steps below:

1. Press the Windows key+R to bring up the Run window.

2. Type services.msc, then press Enter. You can also search for services. msc on the Windows search bar.

3. In the services window, look for the QuickBooksDBXX service that matches your version:

• QuickBooks 2020: QuickBooksDB30
• QuickBooks 2019: QuickBooksDB29
• QuickBooks 2018: QuickBooksDB28

4. Double-click the QuickBooksDBXX service.

5. Set the Startup Type to Automatic and Service Status to Running or Started.

6. Go to the Recovery tab.

7. From the First failure drop-down, select Restart the Service. This automatically restarts the QuickBooksDB service if it fails. Do the same for Second failure and Subsequent failures.

8. Select OK to save the changes.

9. Reboot your computer.

However, given the complexity of the issue and the various attempts you've made to resolve it, I recommend reaching out to QuickBooks Desktop support for further assistance. They may be able to provide more specific guidance or even a solution tailored to your situation.

I understand that technical issues like this can be frustrating, but with the right support and resources, I'm hopeful that you'll be able to resolve the problem and get the QuickBooks Database Server Manager up and running as needed.