Unable to sign in to myo2

I have reset the browser but it makes no difference still cannot access o2 sign

Yes I am using AVG antivirus free and everything is up to date. Thank you

Since 18/6/2021 when i try to sign into my 02 it is blocked by AVG saying infected with URL Phishing

Anne, please click this link (https://bit.ly/3cX1lUv) to see our clean guidelines a file or URL should meet. If any of the guidelines are not met, AVG will flag it as a threat. 

If you believe the website met all the clean guidelines and AVG is falsely detecting it, I would request you to submit a false detection report. Our developers will analyze and get back to you via email. 

Visit https://www.avg.com/en-ww/false-positive-file-form to submit the report. 

Hello Anne.
We will certainly look into this. 
Are you using AVG AntiVirus free? Could you make sure the latest virus definitions are installed? 
Open AVG - > Menu - > Settings -> General -> Update.

Thank you for confirming, Anne.
Could you try loading the website in a different web browser? If the issue persists, please share a screenshot of the threat detection pop with 'See details' clicked. 
If the website load fine on a different web browser, please reset the web browser on which you are experiencing the issue.

Yes I am using AVG antivirus free and everything is up to date. Thank you

I have reset the browser but it makes no difference still cannot access o2 sign

The same thing happens on a different web browser, I do not know how to take a screen shot of the message.but this is what it says in details
Threat name      URL: Phishing
URL                     https://accountso2.co.uk/signin
Process               C\Program Files
                            (x86)\Google\Chrome\Applications\chrome.exe
Detected by          Web shield
Status                   Connection abort

I have tried using another browser but the same thing happens