Can't uninstall AVG Tuenup

I want to uninstall AVG Tuneup but when I do I get an error message: Sorry. Something went wrong. Please try again. I have tried several times and same message comes up. I have also tried by filling out the answers to the "Please help us improve" survey, but no luck. I'm on a Macbook Pro. 
Hello Inga.
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused to you.
We will certainly check and help you.
Please help us with a screenshot of the error to check and help you further.
Here is the link which has the steps to take a screenshot :
https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home)
Thank you. 

Hello Inga.
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused to you.
We will certainly check and help you.
Please help us with a screenshot of the error to check and help you further.
Here is the link which has the steps to take a screenshot :
| AVG (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home)
Thank you.