If your property tax information is missing from the VVMC online portal and you're having trouble logging in, there are several steps you can take. You can try accessing the portal via www.vvmc.in for online tax payments. If the issue persists, consider contacting your internet service provider or filing a manual complaint via registered post. The discussion also touches upon what a property tax certificate is and who is eligible for it, suggesting that this is not a legal query but a technical or procedural one.