Hi Bruno,
Thank you for contacting AVG Community Forum. I see you are facing issues with URL being blocked by AVG. I am sorry for the inconvenience. As the detected URL is false positive, I suggest you to click on the link below to submit it for analysis to our higher level support. Then, our concern team will contact you via email.
https://www.avg.com/en-us/false-positive-file-form
Thanks and keep us updated.
This URL is used to download images shared on Google Chat.

Hello Bruno,
You are welcome.
I thank you for bringing this to our attention. Our team have corrected the false positive detections. I hope you can use the URL to download images. If you further require any help let us know.
Thank you for your understanding.
Thanks Aarthy!
I reported the false positive on the form as suggested.
After some updates, the address "chat.usercontent.google.com" was no longer listed as a threat.
Hi Bruno,
Thank you for contacting AVG Community Forum. I see you are facing issues with URL being blocked by AVG. I am sorry for the inconvenience. As the detected URL is false positive, I suggest you to click on the link below to submit it for analysis to our higher level support. Then, our concern team will contact you via email.
https://www.avg.com/en-us/false-positive-file-form
Thanks and keep us updated.