AVG family safety uninstall

How do I uninstall the AVG family safety off of my laptop.

I keep getting an error message that says invalid credentials.

Since AVG is no longer supporting this software, it is holding my laptop hostage.

Shar-Rese, Please refrain from carrying out multiple postings on the same subject! You won't obtain an answer to your query any faster! See other posting (https://support.avg.com/answers?id=906b00000008seIAAQ).
AVG Guru