Constantly showing up

Hello Mohamed. 
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused to you.
We certainly check and help you.
Please help us with a screenshot of the threat popup 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.

I am getting a threat secured message constantly every time I open a web page from 1 site in particularly (megaplusredirection.tedata.net) without accessing it and it says it's infected with URL:Blacklist
and when I checked that URL I found it is belongs to my ISP provider!
So please help me understand what is happening and how to address this issue!

Screenshot of what I am getting:
https://imgur.com/a/kUW9giB
Threat secured

Hello Mohamed. 
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused to you.
We certainly check and help you.
Please help us with a screenshot of the threat popup 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.

Thank you sir for your concern, the message is no longer appear and problem solved!

but anyway I put for you a screenshot of what I was gettingThreat secured message

Thank you for sharing the screenshot, Mohamed.
We apologize for the inconvenience caused to you.
We certainly check and help you with the issue caused
We have sent an email to your email address offering additional help please check the email and revert us back for further help.
Thank you.