Antivirus not working after reinstall

Hello Thomas,
We regret for the inconvenience caused. Unfortunately we couldn't locate your active subscription under the provided email address. We have sent you an email requesting required information to locate your account. Please reply back to the same email so that we could locate your account and assist you better in resolving the issue.
Thank you.

i had to reinstall the application earlier today, but now the antivirus says its not fully active. ive tried re-reinstallation, repairs and the rest of the recommended actions.

Hello Thomas,
We regret for the inconvenience caused. Unfortunately we couldn't locate your active subscription under the provided email address. We have sent you an email requesting required information to locate your account. Please reply back to the same email so that we could locate your account and assist you better in resolving the issue.
Thank you.