It's not possible to (re)install components with an expired commercial license

Running the Maintenance Tool of an existing Qt installation fails when the perpetual license is expired. After logging in, it's checking for licenses and then notes "No valid license available in your Qt Account for this host platform. Please renew your license(s) from Qt Account."

Expected Result

I should be able to click "Next" and reinstall any installed components, or install new (yet uninstalled) components which had been released while the license was still valid.
If nothing else, I should be able to update Maintenance Tool itself, in regards to the recent announcement about changing the URL.

Actual Result

Clicking "Next" checks the license again, and only shows the same error again.

Justification

I'm allowed to download and install offline installers from https://account.qt.io/, so it should be possible via the online installer as well.

Citing the Licensing FAQs: